diff --git a/coverage/pom.xml b/coverage/pom.xml
index 4776892..96739e2 100644
--- a/coverage/pom.xml
+++ b/coverage/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.zalando</groupId>
         <artifactId>spring-cloud-config-aws-kms-parent</artifactId>
-        <version>5.2-SNAPSHOT</version>
+        <version>5.1.1</version>
     </parent>
 
     <artifactId>spring-cloud-config-aws-kms-coverage</artifactId>
diff --git a/encryption-cli/pom.xml b/encryption-cli/pom.xml
index e2445a0..ac89dde 100644
--- a/encryption-cli/pom.xml
+++ b/encryption-cli/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.zalando</groupId>
         <artifactId>spring-cloud-config-aws-kms-parent</artifactId>
-        <version>5.2-SNAPSHOT</version>
+        <version>5.1.1</version>
     </parent>
 
     <artifactId>spring-cloud-config-aws-kms-encryption-cli</artifactId>
diff --git a/library/pom.xml b/library/pom.xml
index 1d0be69..2f6419d 100644
--- a/library/pom.xml
+++ b/library/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.zalando</groupId>
         <artifactId>spring-cloud-config-aws-kms-parent</artifactId>
-        <version>5.2-SNAPSHOT</version>
+        <version>5.1.1</version>
     </parent>
 
     <artifactId>spring-cloud-config-aws-kms</artifactId>
diff --git a/pom.xml b/pom.xml
index 4166ddb..1b0ff08 100644
--- a/pom.xml
+++ b/pom.xml
@@ -11,7 +11,7 @@
 
     <groupId>org.zalando</groupId>
     <artifactId>spring-cloud-config-aws-kms-parent</artifactId>
-    <version>5.2-SNAPSHOT</version>
+    <version>5.1.1</version>
 
     <packaging>pom</packaging>
 
@@ -64,7 +64,7 @@
         <connection>scm:git:https://github.com/zalando/spring-cloud-config-aws-kms.git</connection>
         <developerConnection>scm:git:git@github.com:zalando/spring-cloud-config-aws-kms.git</developerConnection>
         <url>https://github.com/zalando/spring-cloud-config-aws-kms</url>
-        <tag>HEAD</tag>
+        <tag>5.1.1</tag>
     </scm>
 
     <properties>
diff --git a/tests/integration-test-1/pom.xml b/tests/integration-test-1/pom.xml
index 8697f3e..3ade60c 100644
--- a/tests/integration-test-1/pom.xml
+++ b/tests/integration-test-1/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.zalando</groupId>
         <artifactId>spring-cloud-config-aws-kms-tests</artifactId>
-        <version>5.2-SNAPSHOT</version>
+        <version>5.1.1</version>
     </parent>
 
     <artifactId>spring-cloud-config-aws-kms-integration-test-1</artifactId>
diff --git a/tests/integration-test-2/pom.xml b/tests/integration-test-2/pom.xml
index c6ab880..f27399e 100644
--- a/tests/integration-test-2/pom.xml
+++ b/tests/integration-test-2/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.zalando</groupId>
         <artifactId>spring-cloud-config-aws-kms-tests</artifactId>
-        <version>5.2-SNAPSHOT</version>
+        <version>5.1.1</version>
     </parent>
 
     <artifactId>spring-cloud-config-aws-kms-integration-test-2</artifactId>
diff --git a/tests/integration-test-3/pom.xml b/tests/integration-test-3/pom.xml
index bd991d2..6548fc0 100644
--- a/tests/integration-test-3/pom.xml
+++ b/tests/integration-test-3/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.zalando</groupId>
         <artifactId>spring-cloud-config-aws-kms-tests</artifactId>
-        <version>5.2-SNAPSHOT</version>
+        <version>5.1.1</version>
     </parent>
 
     <artifactId>spring-cloud-config-aws-kms-integration-test-3</artifactId>
diff --git a/tests/pom.xml b/tests/pom.xml
index 04da1cb..ebf67dc 100644
--- a/tests/pom.xml
+++ b/tests/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.zalando</groupId>
         <artifactId>spring-cloud-config-aws-kms-parent</artifactId>
-        <version>5.2-SNAPSHOT</version>
+        <version>5.1.1</version>
     </parent>
 
     <artifactId>spring-cloud-config-aws-kms-tests</artifactId>
diff --git a/tests/test-support/pom.xml b/tests/test-support/pom.xml
index 5e15bb9..8749448 100644
--- a/tests/test-support/pom.xml
+++ b/tests/test-support/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.zalando</groupId>
         <artifactId>spring-cloud-config-aws-kms-tests</artifactId>
-        <version>5.2-SNAPSHOT</version>
+        <version>5.1.1</version>
     </parent>
 
     <artifactId>spring-cloud-config-aws-kms-test-support</artifactId>