diff --git a/archetypes/dcache-nearline-plugin-archetype/pom.xml b/archetypes/dcache-nearline-plugin-archetype/pom.xml
index 9c7080f0f7a..39682fabcfa 100644
--- a/archetypes/dcache-nearline-plugin-archetype/pom.xml
+++ b/archetypes/dcache-nearline-plugin-archetype/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.dcache</groupId>
         <artifactId>archetypes</artifactId>
-        <version>3.0.20</version>
+        <version>3.0.21-SNAPSHOT</version>
     </parent>
 
     <artifactId>dcache-nearline-plugin-archetype</artifactId>
diff --git a/archetypes/pom.xml b/archetypes/pom.xml
index b2c6273c0ad..edbd3be82d3 100644
--- a/archetypes/pom.xml
+++ b/archetypes/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.dcache</groupId>
         <artifactId>dcache-parent</artifactId>
-        <version>3.0.20</version>
+        <version>3.0.21-SNAPSHOT</version>
     </parent>
 
     <artifactId>archetypes</artifactId>
diff --git a/modules/acl-vehicles/pom.xml b/modules/acl-vehicles/pom.xml
index 2d0e6f40daf..8926f208621 100644
--- a/modules/acl-vehicles/pom.xml
+++ b/modules/acl-vehicles/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/acl/pom.xml b/modules/acl/pom.xml
index a95874598d9..32b8e28d9fa 100644
--- a/modules/acl/pom.xml
+++ b/modules/acl/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/cells/pom.xml b/modules/cells/pom.xml
index f70949a400c..c1b9da79afc 100644
--- a/modules/cells/pom.xml
+++ b/modules/cells/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/chimera/pom.xml b/modules/chimera/pom.xml
index 150c859e1ff..76f60d879f4 100644
--- a/modules/chimera/pom.xml
+++ b/modules/chimera/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/common-cli/pom.xml b/modules/common-cli/pom.xml
index cc832f57983..65fed7fdf18 100644
--- a/modules/common-cli/pom.xml
+++ b/modules/common-cli/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.dcache</groupId>
         <artifactId>dcache-parent</artifactId>
-        <version>3.0.20</version>
+        <version>3.0.21-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/modules/common-security/pom.xml b/modules/common-security/pom.xml
index a8a43d4d84a..e98674b62c8 100644
--- a/modules/common-security/pom.xml
+++ b/modules/common-security/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.dcache</groupId>
         <artifactId>dcache-parent</artifactId>
-        <version>3.0.20</version>
+        <version>3.0.21-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/modules/common/pom.xml b/modules/common/pom.xml
index 25afbb86e88..3dd824988f0 100644
--- a/modules/common/pom.xml
+++ b/modules/common/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache-chimera/pom.xml b/modules/dcache-chimera/pom.xml
index 1189e4cec38..d9529a99b4c 100644
--- a/modules/dcache-chimera/pom.xml
+++ b/modules/dcache-chimera/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache-dcap/pom.xml b/modules/dcache-dcap/pom.xml
index f6692859a99..9d3870295ce 100644
--- a/modules/dcache-dcap/pom.xml
+++ b/modules/dcache-dcap/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache-ftp/pom.xml b/modules/dcache-ftp/pom.xml
index c072f854375..c5d84eb61ae 100644
--- a/modules/dcache-ftp/pom.xml
+++ b/modules/dcache-ftp/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache-gplazma/pom.xml b/modules/dcache-gplazma/pom.xml
index 7034b51878a..629a589dc8e 100644
--- a/modules/dcache-gplazma/pom.xml
+++ b/modules/dcache-gplazma/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache-info/pom.xml b/modules/dcache-info/pom.xml
index de39b8308f6..358d732db48 100644
--- a/modules/dcache-info/pom.xml
+++ b/modules/dcache-info/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache-nearline-spi/pom.xml b/modules/dcache-nearline-spi/pom.xml
index b90c369c380..fe43ac45cfd 100644
--- a/modules/dcache-nearline-spi/pom.xml
+++ b/modules/dcache-nearline-spi/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache-nfs/pom.xml b/modules/dcache-nfs/pom.xml
index 51949f51196..568f46b676f 100644
--- a/modules/dcache-nfs/pom.xml
+++ b/modules/dcache-nfs/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache-resilience/pom.xml b/modules/dcache-resilience/pom.xml
index a01d03ede1f..8a15ae81964 100644
--- a/modules/dcache-resilience/pom.xml
+++ b/modules/dcache-resilience/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache-restful-api/pom.xml b/modules/dcache-restful-api/pom.xml
index fe58f0bd99e..4d4b44132e6 100644
--- a/modules/dcache-restful-api/pom.xml
+++ b/modules/dcache-restful-api/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.dcache</groupId>
         <artifactId>dcache-parent</artifactId>
-        <version>3.0.20</version>
+        <version>3.0.21-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/modules/dcache-spacemanager/pom.xml b/modules/dcache-spacemanager/pom.xml
index dc61a9eb16f..12ef84354fe 100644
--- a/modules/dcache-spacemanager/pom.xml
+++ b/modules/dcache-spacemanager/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache-srm/pom.xml b/modules/dcache-srm/pom.xml
index d9fd9a4cbcd..62df4e560f7 100644
--- a/modules/dcache-srm/pom.xml
+++ b/modules/dcache-srm/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache-vehicles/pom.xml b/modules/dcache-vehicles/pom.xml
index bb5ec4ae778..1228317aa6a 100644
--- a/modules/dcache-vehicles/pom.xml
+++ b/modules/dcache-vehicles/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache-webadmin/pom.xml b/modules/dcache-webadmin/pom.xml
index 748f9244bd3..3e8a40f3ce1 100644
--- a/modules/dcache-webadmin/pom.xml
+++ b/modules/dcache-webadmin/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache-webdav/pom.xml b/modules/dcache-webdav/pom.xml
index 22ea396b42f..efa0a8f61cf 100644
--- a/modules/dcache-webdav/pom.xml
+++ b/modules/dcache-webdav/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache-xrootd/pom.xml b/modules/dcache-xrootd/pom.xml
index 05d2ea75c72..7cf0506b940 100644
--- a/modules/dcache-xrootd/pom.xml
+++ b/modules/dcache-xrootd/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/dcache/pom.xml b/modules/dcache/pom.xml
index 252fb8015b7..e6ac1e03eca 100644
--- a/modules/dcache/pom.xml
+++ b/modules/dcache/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/ftp-client/pom.xml b/modules/ftp-client/pom.xml
index d812eaf9afd..f10331187cd 100644
--- a/modules/ftp-client/pom.xml
+++ b/modules/ftp-client/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.dcache</groupId>
         <artifactId>dcache-parent</artifactId>
-        <version>3.0.20</version>
+        <version>3.0.21-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/modules/gplazma2-argus/pom.xml b/modules/gplazma2-argus/pom.xml
index ab95160b088..1e4c2676540 100644
--- a/modules/gplazma2-argus/pom.xml
+++ b/modules/gplazma2-argus/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/gplazma2-banfile/pom.xml b/modules/gplazma2-banfile/pom.xml
index bbce68d001b..f7038185c92 100644
--- a/modules/gplazma2-banfile/pom.xml
+++ b/modules/gplazma2-banfile/pom.xml
@@ -4,7 +4,7 @@
   <parent>
       <groupId>org.dcache</groupId>
       <artifactId>dcache-parent</artifactId>
-      <version>3.0.20</version>
+      <version>3.0.21-SNAPSHOT</version>
       <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/gplazma2-grid/pom.xml b/modules/gplazma2-grid/pom.xml
index cb3f3cf7fb5..939c72e2830 100644
--- a/modules/gplazma2-grid/pom.xml
+++ b/modules/gplazma2-grid/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/gplazma2-htpasswd/pom.xml b/modules/gplazma2-htpasswd/pom.xml
index b3837a5d0c4..b2b50e50f8b 100644
--- a/modules/gplazma2-htpasswd/pom.xml
+++ b/modules/gplazma2-htpasswd/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/gplazma2-jaas/pom.xml b/modules/gplazma2-jaas/pom.xml
index f4daadc6970..2113a30943f 100644
--- a/modules/gplazma2-jaas/pom.xml
+++ b/modules/gplazma2-jaas/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/gplazma2-kpwd/pom.xml b/modules/gplazma2-kpwd/pom.xml
index 7ed1929caee..e9a9652c0c7 100644
--- a/modules/gplazma2-kpwd/pom.xml
+++ b/modules/gplazma2-kpwd/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/gplazma2-krb5/pom.xml b/modules/gplazma2-krb5/pom.xml
index 2cef404cf7f..ad4dd347263 100644
--- a/modules/gplazma2-krb5/pom.xml
+++ b/modules/gplazma2-krb5/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/gplazma2-ldap/pom.xml b/modules/gplazma2-ldap/pom.xml
index 21ed6fb1803..cbdcd082960 100644
--- a/modules/gplazma2-ldap/pom.xml
+++ b/modules/gplazma2-ldap/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.dcache</groupId>
         <artifactId>dcache-parent</artifactId>
-        <version>3.0.20</version>
+        <version>3.0.21-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/modules/gplazma2-multimap/pom.xml b/modules/gplazma2-multimap/pom.xml
index 91835d81b41..05b138656c0 100644
--- a/modules/gplazma2-multimap/pom.xml
+++ b/modules/gplazma2-multimap/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.dcache</groupId>
         <artifactId>dcache-parent</artifactId>
-        <version>3.0.20</version>
+        <version>3.0.21-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/modules/gplazma2-nis/pom.xml b/modules/gplazma2-nis/pom.xml
index 9223ddb9f88..cc88dae71e0 100644
--- a/modules/gplazma2-nis/pom.xml
+++ b/modules/gplazma2-nis/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/gplazma2-nsswitch/pom.xml b/modules/gplazma2-nsswitch/pom.xml
index 51e8aecda1a..3d5b07d0f69 100644
--- a/modules/gplazma2-nsswitch/pom.xml
+++ b/modules/gplazma2-nsswitch/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/gplazma2-oidc/pom.xml b/modules/gplazma2-oidc/pom.xml
index fde358ae2db..1ae54cadd0a 100644
--- a/modules/gplazma2-oidc/pom.xml
+++ b/modules/gplazma2-oidc/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.dcache</groupId>
         <artifactId>dcache-parent</artifactId>
-        <version>3.0.20</version>
+        <version>3.0.21-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/modules/gplazma2-voms/pom.xml b/modules/gplazma2-voms/pom.xml
index 1b491005c06..895463e5eaa 100644
--- a/modules/gplazma2-voms/pom.xml
+++ b/modules/gplazma2-voms/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/gplazma2-xacml/pom.xml b/modules/gplazma2-xacml/pom.xml
index d19ec9c6cf5..23e1a30bfec 100644
--- a/modules/gplazma2-xacml/pom.xml
+++ b/modules/gplazma2-xacml/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <artifactId>dcache-parent</artifactId>
         <groupId>org.dcache</groupId>
-        <version>3.0.20</version>
+        <version>3.0.21-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/modules/gplazma2/pom.xml b/modules/gplazma2/pom.xml
index 380fc01cb0d..2804e0bd07b 100644
--- a/modules/gplazma2/pom.xml
+++ b/modules/gplazma2/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/logback-console-config/pom.xml b/modules/logback-console-config/pom.xml
index 2a679cdc698..7a08b5ec508 100644
--- a/modules/logback-console-config/pom.xml
+++ b/modules/logback-console-config/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/logback-test-config/pom.xml b/modules/logback-test-config/pom.xml
index 548e6711d32..3b08ab70d0b 100644
--- a/modules/logback-test-config/pom.xml
+++ b/modules/logback-test-config/pom.xml
@@ -3,7 +3,7 @@
 
   <groupId>org.dcache</groupId>
   <artifactId>logback-test-config</artifactId>
-  <version>3.0.20</version>
+  <version>3.0.21-SNAPSHOT</version>
   <packaging>jar</packaging>
 
   <name>Logback config for building and testing</name>
diff --git a/modules/missingfiles-semsg/pom.xml b/modules/missingfiles-semsg/pom.xml
index da22c7aa03b..5dd58228c64 100644
--- a/modules/missingfiles-semsg/pom.xml
+++ b/modules/missingfiles-semsg/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.dcache</groupId>
         <artifactId>dcache-parent</artifactId>
-        <version>3.0.20</version>
+        <version>3.0.21-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/modules/srm-client/pom.xml b/modules/srm-client/pom.xml
index b315a2f7395..da0db4e4bcc 100644
--- a/modules/srm-client/pom.xml
+++ b/modules/srm-client/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.dcache</groupId>
         <artifactId>dcache-parent</artifactId>
-        <version>3.0.20</version>
+        <version>3.0.21-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/modules/srm-common/pom.xml b/modules/srm-common/pom.xml
index 38b16f8f15d..99ca5a78ebe 100644
--- a/modules/srm-common/pom.xml
+++ b/modules/srm-common/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/modules/srm-server/pom.xml b/modules/srm-server/pom.xml
index 78fd48c3f26..fdfbbf86af9 100644
--- a/modules/srm-server/pom.xml
+++ b/modules/srm-server/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/packages/fhs/pom.xml b/packages/fhs/pom.xml
index d78a2632deb..9c5441ca6d7 100644
--- a/packages/fhs/pom.xml
+++ b/packages/fhs/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.dcache</groupId>
         <artifactId>packaging</artifactId>
-        <version>3.0.20</version>
+        <version>3.0.21-SNAPSHOT</version>
     </parent>
 
     <artifactId>dcache-fhs</artifactId>
diff --git a/packages/pom.xml b/packages/pom.xml
index 7078dd6a8cc..49c0c7c0367 100644
--- a/packages/pom.xml
+++ b/packages/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>packaging</artifactId>
diff --git a/packages/system-test/pom.xml b/packages/system-test/pom.xml
index 854dca2c8da..23554232a40 100644
--- a/packages/system-test/pom.xml
+++ b/packages/system-test/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>packaging</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>system-test</artifactId>
diff --git a/packages/tar/pom.xml b/packages/tar/pom.xml
index 29ee807ea5d..2e5a1ec169c 100644
--- a/packages/tar/pom.xml
+++ b/packages/tar/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>packaging</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>dcache-tar</artifactId>
diff --git a/plugins/hsqldb/pom.xml b/plugins/hsqldb/pom.xml
index fca82c34430..0d59c10ab4d 100644
--- a/plugins/hsqldb/pom.xml
+++ b/plugins/hsqldb/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>plugins</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>dcache-plugin-hsqldb</artifactId>
diff --git a/plugins/pom.xml b/plugins/pom.xml
index c3a3f4f5dce..bbc82cfc9f7 100644
--- a/plugins/pom.xml
+++ b/plugins/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.dcache</groupId>
     <artifactId>dcache-parent</artifactId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>plugins</artifactId>
diff --git a/pom.xml b/pom.xml
index 03161496f1e..58116f176f7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -2,7 +2,7 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.dcache</groupId>
-    <version>3.0.20</version>
+    <version>3.0.21-SNAPSHOT</version>
     <artifactId>dcache-parent</artifactId>
     <packaging>pom</packaging>
 
@@ -114,7 +114,7 @@
         <url>https://github.com/dCache/dcache</url>
         <connection>scm:git:https://github.com/dCache/dcache.git</connection>
         <developerConnection>scm:git:ssh://git@github.com/dCache/dcache.git</developerConnection>
-      <tag>3.0.20</tag>
+      <tag>HEAD</tag>
   </scm>
 
     <repositories>