diff --git a/integration/pom.xml b/integration/pom.xml
index 9f00774d..f901647c 100755
--- a/integration/pom.xml
+++ b/integration/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-parent</artifactId>
-    <version>1.7.20</version>
+    <version>1.7.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>integration</artifactId>
diff --git a/jcl-over-slf4j/pom.xml b/jcl-over-slf4j/pom.xml
index 7c16e8e8..685c6ae2 100755
--- a/jcl-over-slf4j/pom.xml
+++ b/jcl-over-slf4j/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-parent</artifactId>
-    <version>1.7.20</version>
+    <version>1.7.21-SNAPSHOT</version>
   </parent>
 
   <modelVersion>4.0.0</modelVersion>
diff --git a/jul-to-slf4j/pom.xml b/jul-to-slf4j/pom.xml
index ca933de5..fc38b655 100755
--- a/jul-to-slf4j/pom.xml
+++ b/jul-to-slf4j/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-parent</artifactId>
-    <version>1.7.20</version>
+    <version>1.7.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>jul-to-slf4j</artifactId>
diff --git a/log4j-over-slf4j/pom.xml b/log4j-over-slf4j/pom.xml
index 6353eea9..72960e2f 100755
--- a/log4j-over-slf4j/pom.xml
+++ b/log4j-over-slf4j/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-parent</artifactId>
-    <version>1.7.20</version>
+    <version>1.7.21-SNAPSHOT</version>
   </parent>
 
 
diff --git a/osgi-over-slf4j/pom.xml b/osgi-over-slf4j/pom.xml
index 8bf8ddc6..47c0570b 100755
--- a/osgi-over-slf4j/pom.xml
+++ b/osgi-over-slf4j/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-parent</artifactId>
-    <version>1.7.20</version>
+    <version>1.7.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>osgi-over-slf4j</artifactId>
diff --git a/pom.xml b/pom.xml
index bb59d773..776c16b0 100755
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
   <groupId>org.slf4j</groupId>
   <artifactId>slf4j-parent</artifactId>
-  <version>1.7.20</version>
+  <version>1.7.21-SNAPSHOT</version>
 
   <packaging>pom</packaging>
   <name>SLF4J</name>
diff --git a/slf4j-android/pom.xml b/slf4j-android/pom.xml
index 305d0441..029141c2 100644
--- a/slf4j-android/pom.xml
+++ b/slf4j-android/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.slf4j</groupId>
         <artifactId>slf4j-parent</artifactId>
-        <version>1.7.20</version>
+        <version>1.7.21-SNAPSHOT</version>
     </parent>
 
     <artifactId>slf4j-android</artifactId>
diff --git a/slf4j-api/pom.xml b/slf4j-api/pom.xml
index 3421a4ac..eb760ba4 100755
--- a/slf4j-api/pom.xml
+++ b/slf4j-api/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-parent</artifactId>
-    <version>1.7.20</version>
+    <version>1.7.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>slf4j-api</artifactId>
diff --git a/slf4j-ext/pom.xml b/slf4j-ext/pom.xml
index 75e50817..5765eb0a 100755
--- a/slf4j-ext/pom.xml
+++ b/slf4j-ext/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-parent</artifactId>
-    <version>1.7.20</version>
+    <version>1.7.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>slf4j-ext</artifactId>
diff --git a/slf4j-jcl/pom.xml b/slf4j-jcl/pom.xml
index 24700860..7d56d0a6 100755
--- a/slf4j-jcl/pom.xml
+++ b/slf4j-jcl/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-parent</artifactId>
-    <version>1.7.20</version>
+    <version>1.7.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>slf4j-jcl</artifactId>
diff --git a/slf4j-jdk14/pom.xml b/slf4j-jdk14/pom.xml
index 35036519..ef34b7d9 100755
--- a/slf4j-jdk14/pom.xml
+++ b/slf4j-jdk14/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-parent</artifactId>
-    <version>1.7.20</version>
+    <version>1.7.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>slf4j-jdk14</artifactId>
diff --git a/slf4j-log4j12/pom.xml b/slf4j-log4j12/pom.xml
index a46d5506..35117fed 100755
--- a/slf4j-log4j12/pom.xml
+++ b/slf4j-log4j12/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-parent</artifactId>
-    <version>1.7.20</version>
+    <version>1.7.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>slf4j-log4j12</artifactId>
diff --git a/slf4j-migrator/pom.xml b/slf4j-migrator/pom.xml
index 58dee1b6..ee634e75 100755
--- a/slf4j-migrator/pom.xml
+++ b/slf4j-migrator/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-parent</artifactId>
-    <version>1.7.20</version>
+    <version>1.7.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>slf4j-migrator</artifactId>
diff --git a/slf4j-nop/pom.xml b/slf4j-nop/pom.xml
index 8a1556d5..698ea2a5 100755
--- a/slf4j-nop/pom.xml
+++ b/slf4j-nop/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-parent</artifactId>
-    <version>1.7.20</version>
+    <version>1.7.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>slf4j-nop</artifactId>
diff --git a/slf4j-simple/pom.xml b/slf4j-simple/pom.xml
index 9cb823ad..9d0b9537 100755
--- a/slf4j-simple/pom.xml
+++ b/slf4j-simple/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-parent</artifactId>
-    <version>1.7.20</version>
+    <version>1.7.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>slf4j-simple</artifactId>
diff --git a/slf4j-site/pom.xml b/slf4j-site/pom.xml
index bcd1c2d6..a295374a 100755
--- a/slf4j-site/pom.xml
+++ b/slf4j-site/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.slf4j</groupId>
     <artifactId>slf4j-parent</artifactId>
-    <version>1.7.20</version>
+    <version>1.7.21-SNAPSHOT</version>
   </parent>
 
   <artifactId>slf4j-site</artifactId>