diff --git a/pom.xml b/pom.xml
index e69f6868dbb08ec8d24c8f9357b7669b15f3a6d5..7637c2eee555fef6c307a7a08004847f4ccfd3b0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,7 +18,7 @@
     <artifactId>smp-modules</artifactId>
     <packaging>pom</packaging>
     <name>SMP</name>
-    <version>5.0.1</version>
+    <version>5.1-SNAPSHOT</version>
 
     <modules>
         <module>smp-angular</module>
@@ -129,7 +129,7 @@
     <scm>
         <developerConnection>scm:git:https://ec.europa.eu/digital-building-blocks/code/scm/edelivery/smp.git
         </developerConnection>
-        <tag>5.0.1</tag>
+        <tag>HEAD</tag>
     </scm>
 
     <repositories>
diff --git a/smp-aggregator/pom.xml b/smp-aggregator/pom.xml
index 875ee37db68c8f18eb8bb1d7c9213a17d8821114..487bbbaf31b1eb75e90bbd9ad4d8a676b15a5d15 100644
--- a/smp-aggregator/pom.xml
+++ b/smp-aggregator/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>smp-modules</artifactId>
         <groupId>eu.europa.ec.edelivery</groupId>
-        <version>5.0.1</version>
+        <version>5.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/smp-angular/pom.xml b/smp-angular/pom.xml
index d026c899a971fdf3b6a6323dd48ee8e2763ca0e3..0092b5987607516956282f30b6b727529d5247a5 100644
--- a/smp-angular/pom.xml
+++ b/smp-angular/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>eu.europa.ec.edelivery</groupId>
     <artifactId>smp-modules</artifactId>
-    <version>5.0.1</version>
+    <version>5.1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>smp-angular</artifactId>
diff --git a/smp-examples/pom.xml b/smp-examples/pom.xml
index 3d86e3b1ff4262e666a41476b872687aab4d8e4d..780759819e1fa7f3a1fb23022c963ff59dcdbfd6 100644
--- a/smp-examples/pom.xml
+++ b/smp-examples/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>eu.europa.ec.edelivery</groupId>
         <artifactId>smp-modules</artifactId>
-        <version>5.0.1</version>
+        <version>5.1-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>smp-examples</artifactId>
diff --git a/smp-examples/resource-spi-example/pom.xml b/smp-examples/resource-spi-example/pom.xml
index 0e50e8ba991cb8a65e5b344088f785f05f1fa6b7..a3bd2c3eae3e3284de00f0a98c970190bcb827e2 100644
--- a/smp-examples/resource-spi-example/pom.xml
+++ b/smp-examples/resource-spi-example/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>eu.europa.ec.edelivery</groupId>
         <artifactId>smp-modules</artifactId>
-        <version>5.0.1</version>
+        <version>5.1-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <properties>
diff --git a/smp-examples/smp-spi-payload-validation-example/pom.xml b/smp-examples/smp-spi-payload-validation-example/pom.xml
index 32c06f7e17fdb534b429fc82bd4129e1a3cba540..74039b668aef3b9e4498ae42925373fef2d9a5b1 100644
--- a/smp-examples/smp-spi-payload-validation-example/pom.xml
+++ b/smp-examples/smp-spi-payload-validation-example/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>eu.europa.ec.edelivery</groupId>
         <artifactId>smp-modules</artifactId>
-        <version>5.0.1</version>
+        <version>5.1-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <properties>
diff --git a/smp-resource-extensions/oasis-cppa3-spi/pom.xml b/smp-resource-extensions/oasis-cppa3-spi/pom.xml
index 6f5b200f8cccf4a0aa5e66b3332859084ed1f519..47c61eb589cd9a65b9b27935b6d0a58c520dcccc 100644
--- a/smp-resource-extensions/oasis-cppa3-spi/pom.xml
+++ b/smp-resource-extensions/oasis-cppa3-spi/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>eu.europa.ec.edelivery</groupId>
         <artifactId>smp-modules</artifactId>
-        <version>5.0.1</version>
+        <version>5.1-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <properties>
diff --git a/smp-resource-extensions/oasis-smp-spi/pom.xml b/smp-resource-extensions/oasis-smp-spi/pom.xml
index fb9269c11fd17d948d43444d30bb8aad498342d9..beec13c9931be86c6827fda02af18006936dcb84 100644
--- a/smp-resource-extensions/oasis-smp-spi/pom.xml
+++ b/smp-resource-extensions/oasis-smp-spi/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>eu.europa.ec.edelivery</groupId>
         <artifactId>smp-modules</artifactId>
-        <version>5.0.1</version>
+        <version>5.1-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <properties>
diff --git a/smp-resource-extensions/pom.xml b/smp-resource-extensions/pom.xml
index 22bf2b56747fd51a4a6bb157a4cc482d93fb7a54..26ff1819b8ef0ec9c9d6d391ea5f539cfb0beb54 100644
--- a/smp-resource-extensions/pom.xml
+++ b/smp-resource-extensions/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>eu.europa.ec.edelivery</groupId>
         <artifactId>smp-modules</artifactId>
-        <version>5.0.1</version>
+        <version>5.1-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>smp-resource-extensions</artifactId>
diff --git a/smp-server-library/pom.xml b/smp-server-library/pom.xml
index ccb91dd6fb86a2f8d3e5c878be79e57d5b7de3a0..6f576d4bd513fc1958e588071202b1ecdb4d80bb 100644
--- a/smp-server-library/pom.xml
+++ b/smp-server-library/pom.xml
@@ -16,7 +16,7 @@
     <parent>
         <groupId>eu.europa.ec.edelivery</groupId>
         <artifactId>smp-modules</artifactId>
-        <version>5.0.1</version>
+        <version>5.1-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>smp-server-library</artifactId>
diff --git a/smp-soapui-tests/pom.xml b/smp-soapui-tests/pom.xml
index 229f844806c9c927c48f69e7e49ca4bd26627cb9..668e02cd9d87ba8060101673a9afe9f6cd7f60f7 100644
--- a/smp-soapui-tests/pom.xml
+++ b/smp-soapui-tests/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>eu.europa.ec.edelivery</groupId>
         <artifactId>smp-modules</artifactId>
-        <version>5.0.1</version>
+        <version>5.1-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>smp-soapui-tests</artifactId>
diff --git a/smp-spi/pom.xml b/smp-spi/pom.xml
index d674e92d0b3de3bedfd11f4cd5a782ac22b58ce6..7ca4f2ead2fa1e4483b31b120d2f118167a3a7e1 100644
--- a/smp-spi/pom.xml
+++ b/smp-spi/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>eu.europa.ec.edelivery</groupId>
         <artifactId>smp-modules</artifactId>
-        <version>5.0.1</version>
+        <version>5.1-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>smp-spi</artifactId>
diff --git a/smp-springboot/pom.xml b/smp-springboot/pom.xml
index 349abebd9ad6b71f3a49559617d0dcbadf0d6d5d..d40de2ec6226525b07043660c85cd21040ada191 100644
--- a/smp-springboot/pom.xml
+++ b/smp-springboot/pom.xml
@@ -19,7 +19,7 @@ limitations under the License.
     <parent>
         <groupId>eu.europa.ec.edelivery</groupId>
         <artifactId>smp-modules</artifactId>
-        <version>5.0.1</version>
+        <version>5.1-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>smp-springboot</artifactId>
diff --git a/smp-webapp/pom.xml b/smp-webapp/pom.xml
index 2bd040c65c0000197ab914641a77d7d5b3354a05..099ea45a633401ecb98317e09c27fe054b5c63a8 100644
--- a/smp-webapp/pom.xml
+++ b/smp-webapp/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>eu.europa.ec.edelivery</groupId>
         <artifactId>smp-modules</artifactId>
-        <version>5.0.1</version>
+        <version>5.1-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>smp</artifactId>