diff --git a/README.md b/README.md
index e2b3e8f..aa20792 100644
--- a/README.md
+++ b/README.md
@@ -80,7 +80,7 @@ class WithEnvironmentVariables {
 <dependency>
   <groupId>uk.org.webcompere</groupId>
   <artifactId>system-stubs-core</artifactId>
-  <version>2.1.4</version>
+  <version>2.1.5</version>
 </dependency>
 ```
 
@@ -90,7 +90,7 @@ class WithEnvironmentVariables {
 <dependency>
   <groupId>uk.org.webcompere</groupId>
   <artifactId>system-stubs-junit4</artifactId>
-  <version>2.1.4</version>
+  <version>2.1.5</version>
 </dependency>
 ```
 
@@ -100,7 +100,7 @@ class WithEnvironmentVariables {
 <dependency>
   <groupId>uk.org.webcompere</groupId>
   <artifactId>system-stubs-jupiter</artifactId>
-  <version>2.1.4</version>
+  <version>2.1.5</version>
 </dependency>
 ```
 
@@ -110,7 +110,7 @@ class WithEnvironmentVariables {
 <dependency>
   <groupId>uk.org.webcompere</groupId>
   <artifactId>system-stubs-testng</artifactId>
-  <version>2.1.4</version>
+  <version>2.1.5</version>
 </dependency>
 ```
 
diff --git a/pom.xml b/pom.xml
index 1e37e0b..afb29d3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
   <groupId>uk.org.webcompere</groupId>
   <artifactId>system-stubs-parent</artifactId>
-  <version>2.1.5-SNAPSHOT</version>
+  <version>2.1.6-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <name>System Stubs Parent</name>
@@ -60,13 +60,13 @@
       <dependency>
         <groupId>uk.org.webcompere</groupId>
         <artifactId>system-stubs-interceptor</artifactId>
-        <version>2.1.5-SNAPSHOT</version>
+        <version>2.1.6-SNAPSHOT</version>
         <scope>provided</scope>
       </dependency>
       <dependency>
         <groupId>uk.org.webcompere</groupId>
         <artifactId>system-stubs-core</artifactId>
-        <version>2.1.5-SNAPSHOT</version>
+        <version>2.1.6-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>org.apache.commons</groupId>
diff --git a/system-stubs-core/pom.xml b/system-stubs-core/pom.xml
index 50ead8d..2d37904 100644
--- a/system-stubs-core/pom.xml
+++ b/system-stubs-core/pom.xml
@@ -5,12 +5,12 @@
   <parent>
     <groupId>uk.org.webcompere</groupId>
     <artifactId>system-stubs-parent</artifactId>
-    <version>2.1.5-SNAPSHOT</version>
+    <version>2.1.6-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
   <artifactId>system-stubs-core</artifactId>
-  <version>2.1.5-SNAPSHOT</version>
+  <version>2.1.6-SNAPSHOT</version>
   <packaging>jar</packaging>
 
   <name>System Stubs Core</name>
diff --git a/system-stubs-interceptor/pom.xml b/system-stubs-interceptor/pom.xml
index d645c63..052fa4f 100644
--- a/system-stubs-interceptor/pom.xml
+++ b/system-stubs-interceptor/pom.xml
@@ -5,12 +5,12 @@
   <parent>
     <groupId>uk.org.webcompere</groupId>
     <artifactId>system-stubs-parent</artifactId>
-    <version>2.1.5-SNAPSHOT</version>
+    <version>2.1.6-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
   <artifactId>system-stubs-interceptor</artifactId>
-  <version>2.1.5-SNAPSHOT</version>
+  <version>2.1.6-SNAPSHOT</version>
   <packaging>jar</packaging>
 
   <name>System Stubs Interceptor</name>
diff --git a/system-stubs-junit4/README.md b/system-stubs-junit4/README.md
index 3690fae..97c4e24 100644
--- a/system-stubs-junit4/README.md
+++ b/system-stubs-junit4/README.md
@@ -9,7 +9,7 @@ project and has been rebuilt from the ground up for this version.
 <dependency>
   <groupId>uk.org.webcompere</groupId>
   <artifactId>system-stubs-junit4</artifactId>
-  <version>2.1.4</version>
+  <version>2.1.5</version>
 </dependency>
 ```
 
diff --git a/system-stubs-junit4/pom.xml b/system-stubs-junit4/pom.xml
index d18664c..93ae28d 100644
--- a/system-stubs-junit4/pom.xml
+++ b/system-stubs-junit4/pom.xml
@@ -5,12 +5,12 @@
   <parent>
     <groupId>uk.org.webcompere</groupId>
     <artifactId>system-stubs-parent</artifactId>
-    <version>2.1.5-SNAPSHOT</version>
+    <version>2.1.6-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
   <artifactId>system-stubs-junit4</artifactId>
-  <version>2.1.5-SNAPSHOT</version>
+  <version>2.1.6-SNAPSHOT</version>
   <packaging>jar</packaging>
 
   <name>System Stubs JUnit4</name>
diff --git a/system-stubs-jupiter/README.md b/system-stubs-jupiter/README.md
index 58eb711..4e9039a 100644
--- a/system-stubs-jupiter/README.md
+++ b/system-stubs-jupiter/README.md
@@ -7,7 +7,7 @@ JUnit 5 unit test.
 <dependency>
   <groupId>uk.org.webcompere</groupId>
   <artifactId>system-stubs-jupiter</artifactId>
-  <version>2.1.4</version>
+  <version>2.1.5</version>
 </dependency>
 ```
 
diff --git a/system-stubs-jupiter/pom.xml b/system-stubs-jupiter/pom.xml
index 75eff63..701e9bd 100644
--- a/system-stubs-jupiter/pom.xml
+++ b/system-stubs-jupiter/pom.xml
@@ -5,12 +5,12 @@
   <parent>
     <groupId>uk.org.webcompere</groupId>
     <artifactId>system-stubs-parent</artifactId>
-    <version>2.1.5-SNAPSHOT</version>
+    <version>2.1.6-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
   <artifactId>system-stubs-jupiter</artifactId>
-  <version>2.1.5-SNAPSHOT</version>
+  <version>2.1.6-SNAPSHOT</version>
   <packaging>jar</packaging>
 
   <name>System Stubs Jupiter</name>
diff --git a/system-stubs-testng/README.md b/system-stubs-testng/README.md
index 7ac82b5..e5f8f8d 100644
--- a/system-stubs-testng/README.md
+++ b/system-stubs-testng/README.md
@@ -6,7 +6,7 @@ Provides some automatic instantiation of System Stubs objects during the test li
 <dependency>
   <groupId>uk.org.webcompere</groupId>
   <artifactId>system-stubs-testng</artifactId>
-  <version>2.1.4</version>
+  <version>2.1.5</version>
 </dependency>
 ```
 
diff --git a/system-stubs-testng/pom.xml b/system-stubs-testng/pom.xml
index 742ae9c..275957f 100644
--- a/system-stubs-testng/pom.xml
+++ b/system-stubs-testng/pom.xml
@@ -5,13 +5,13 @@
   <parent>
     <groupId>uk.org.webcompere</groupId>
     <artifactId>system-stubs-parent</artifactId>
-    <version>2.1.5-SNAPSHOT</version>
+    <version>2.1.6-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
 
   <artifactId>system-stubs-testng</artifactId>
-  <version>2.1.5-SNAPSHOT</version>
+  <version>2.1.6-SNAPSHOT</version>
   <packaging>jar</packaging>
 
   <properties>