diff --git a/cadc-registry/build.gradle b/cadc-registry/build.gradle
index 3c021c3..09dfc55 100644
--- a/cadc-registry/build.gradle
+++ b/cadc-registry/build.gradle
@@ -16,7 +16,7 @@ sourceCompatibility = 1.8
 
 group = 'org.opencadc'
 
-version = '1.7.2'
+version = '1.7.3'
 
 description = 'OpenCADC Registry client library'
 def git_url = 'https://github.com/opencadc/reg'
diff --git a/cadc-registry/src/main/java/ca/nrc/cadc/reg/Standards.java b/cadc-registry/src/main/java/ca/nrc/cadc/reg/Standards.java
index 8dc0266..734d0e4 100644
--- a/cadc-registry/src/main/java/ca/nrc/cadc/reg/Standards.java
+++ b/cadc-registry/src/main/java/ca/nrc/cadc/reg/Standards.java
@@ -123,12 +123,16 @@ public class Standards {
     @Deprecated
     public static final URI UMS_WHOAMI_01 = URI.create("ivo://ivoa.net/std/UMS#whoami-0.1");
     
-    public static final URI UMS_USERS_10 = URI.create("ivo://opencadc.org/std/UMS#users-1.0");
-    public static final URI UMS_REQS_10 = URI.create("ivo://opencadc.org/std/UMS#reqs-1.0");
-    public static final URI UMS_LOGIN_10 = URI.create("ivo://opencadc.org/std/UMS#login-1.0");
-    public static final URI UMS_RESETPASS_10 = URI.create("ivo://opencadc.org/std/UMS#resetpass-1.0");
-    public static final URI UMS_WHOAMI_10 = URI.create("ivo://opencadc.org/std/UMS#whoami-1.0");
-
+    public static final URI UMS_USERS_10 = URI.create("http://www.opencadc.org/std/UMS#users-1.0");
+    public static final URI UMS_REQS_10 = URI.create("http://www.opencadc.org/std/UMS#reqs-1.0");
+    public static final URI UMS_LOGIN_10 = URI.create("http://www.opencadc.org/std/UMS#login-1.0");
+    public static final URI UMS_RESETPASS_10 = URI.create("http://www.opencadc.org/std/UMS#resetpass-1.0");
+    public static final URI UMS_WHOAMI_10 = URI.create("http://www.opencadc.org/std/UMS#whoami-1.0");
+
+    // SRCNet prototypes
+    public static final URI POSIX_GROUPMAP = URI.create("http://www.opencadc.org/std/posix#group-mapping-0.1");
+    public static final URI POSIX_USERMAP = URI.create("http://www.opencadc.org/std/posix#user-mapping-0.1");
+    
     public static final URI VOSI_CAPABILITIES = URI.create("ivo://ivoa.net/std/VOSI#capabilities");
     public static final URI VOSI_AVAILABILITY = URI.create("ivo://ivoa.net/std/VOSI#availability");
     public static final URI VOSI_TABLES = URI.create("ivo://ivoa.net/std/VOSI#tables");