diff --git a/amqp/pom.xml b/amqp/pom.xml
index 86318be6..bbc7932f 100644
--- a/amqp/pom.xml
+++ b/amqp/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>io.cloudevents</groupId>
 		<artifactId>cloudevents-parent</artifactId>
-		<version>5.0.0</version>
+		<version>5.1.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>cloudevents-amqp-proton</artifactId>
diff --git a/api/pom.xml b/api/pom.xml
index 83b44d4b..1d20fb37 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>io.cloudevents</groupId>
         <artifactId>cloudevents-parent</artifactId>
-        <version>5.0.0</version>
+        <version>5.1.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>cloudevents-api</artifactId>
diff --git a/benchmarks/pom.xml b/benchmarks/pom.xml
index 20433350..d773e770 100644
--- a/benchmarks/pom.xml
+++ b/benchmarks/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <groupId>io.cloudevents</groupId>
         <artifactId>cloudevents-parent</artifactId>
-        <version>5.0.0</version>
+        <version>5.1.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>cloudevents-benchmarks</artifactId>
diff --git a/bom/pom.xml b/bom/pom.xml
index b30d88f6..8455ab16 100644
--- a/bom/pom.xml
+++ b/bom/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>io.cloudevents</groupId>
         <artifactId>cloudevents-parent</artifactId>
-        <version>5.0.0</version>
+        <version>5.1.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>cloudevents-bom</artifactId>
diff --git a/core/pom.xml b/core/pom.xml
index 340495f8..28a4e2b8 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>io.cloudevents</groupId>
         <artifactId>cloudevents-parent</artifactId>
-        <version>5.0.0</version>
+        <version>5.1.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>cloudevents-core</artifactId>
diff --git a/examples/amqp-proton/pom.xml b/examples/amqp-proton/pom.xml
index ce3c7c2b..81e8149d 100644
--- a/examples/amqp-proton/pom.xml
+++ b/examples/amqp-proton/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <artifactId>cloudevents-examples</artifactId>
         <groupId>io.cloudevents</groupId>
-        <version>5.0.0</version>
+        <version>5.1.0-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/examples/basic-http/pom.xml b/examples/basic-http/pom.xml
index 515b5a0d..8dd9dbda 100644
--- a/examples/basic-http/pom.xml
+++ b/examples/basic-http/pom.xml
@@ -21,7 +21,7 @@
     <parent>
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         <groupId>io.cloudevents</groupId>
-        <version>5.0.0</version>
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/examples/kafka/pom.xml b/examples/kafka/pom.xml
index 2e1ac5c7..01329f49 100644
--- a/examples/kafka/pom.xml
+++ b/examples/kafka/pom.xml
@@ -5,7 +5,7 @@
     <parent>
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         <groupId>io.cloudevents</groupId>
-        <version>5.0.0</version>
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     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/examples/pom.xml b/examples/pom.xml
index f3ee8d08..e5df3890 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -5,7 +5,7 @@
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         <groupId>io.cloudevents</groupId>
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/examples/restful-ws-microprofile-liberty/pom.xml b/examples/restful-ws-microprofile-liberty/pom.xml
index 84f2fbf3..2beab444 100644
--- a/examples/restful-ws-microprofile-liberty/pom.xml
+++ b/examples/restful-ws-microprofile-liberty/pom.xml
@@ -3,7 +3,7 @@
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         <groupId>io.cloudevents</groupId>
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     <artifactId>cloudevents-restful-ws-microprofile-liberty-example</artifactId>
diff --git a/examples/restful-ws-quarkus/pom.xml b/examples/restful-ws-quarkus/pom.xml
index 74e18d63..221c3492 100644
--- a/examples/restful-ws-quarkus/pom.xml
+++ b/examples/restful-ws-quarkus/pom.xml
@@ -5,7 +5,7 @@
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         <groupId>io.cloudevents</groupId>
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     <artifactId>cloudevents-restful-ws-quarkus-example</artifactId>
diff --git a/examples/restful-ws-spring-boot/pom.xml b/examples/restful-ws-spring-boot/pom.xml
index 594aecf1..03528aed 100644
--- a/examples/restful-ws-spring-boot/pom.xml
+++ b/examples/restful-ws-spring-boot/pom.xml
@@ -5,7 +5,7 @@
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/examples/rocketmq/pom.xml b/examples/rocketmq/pom.xml
index cf64d00d..152c3a89 100644
--- a/examples/rocketmq/pom.xml
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@@ -5,7 +5,7 @@
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/examples/spring-reactive/pom.xml b/examples/spring-reactive/pom.xml
index 2bd37106..854dd532 100644
--- a/examples/spring-reactive/pom.xml
+++ b/examples/spring-reactive/pom.xml
@@ -5,7 +5,7 @@
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/examples/spring-rsocket/pom.xml b/examples/spring-rsocket/pom.xml
index c5c24a6a..5d7d4181 100644
--- a/examples/spring-rsocket/pom.xml
+++ b/examples/spring-rsocket/pom.xml
@@ -5,7 +5,7 @@
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/examples/vertx/pom.xml b/examples/vertx/pom.xml
index dc6b7c95..cc253266 100644
--- a/examples/vertx/pom.xml
+++ b/examples/vertx/pom.xml
@@ -5,7 +5,7 @@
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         <groupId>io.cloudevents</groupId>
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diff --git a/formats/avro-compact/pom.xml b/formats/avro-compact/pom.xml
index cab1f441..e3fb8449 100644
--- a/formats/avro-compact/pom.xml
+++ b/formats/avro-compact/pom.xml
@@ -23,7 +23,7 @@
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         <artifactId>cloudevents-parent</artifactId>
-        <version>5.0.0</version>
+        <version>5.1.0-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
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diff --git a/formats/json-jackson/pom.xml b/formats/json-jackson/pom.xml
index 559c9e70..1afab121 100644
--- a/formats/json-jackson/pom.xml
+++ b/formats/json-jackson/pom.xml
@@ -22,7 +22,7 @@
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         <groupId>io.cloudevents</groupId>
         <artifactId>cloudevents-parent</artifactId>
-        <version>5.0.0</version>
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         <relativePath>../../pom.xml</relativePath>
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diff --git a/formats/protobuf/pom.xml b/formats/protobuf/pom.xml
index db62861f..1da68824 100644
--- a/formats/protobuf/pom.xml
+++ b/formats/protobuf/pom.xml
@@ -23,7 +23,7 @@
     <parent>
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         <artifactId>cloudevents-parent</artifactId>
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diff --git a/formats/xml/pom.xml b/formats/xml/pom.xml
index b14b628b..a7f8320e 100644
--- a/formats/xml/pom.xml
+++ b/formats/xml/pom.xml
@@ -23,7 +23,7 @@
     <parent>
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         <artifactId>cloudevents-parent</artifactId>
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         <relativePath>../../pom.xml</relativePath>
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diff --git a/http/basic/pom.xml b/http/basic/pom.xml
index b53e4f43..557e53cd 100644
--- a/http/basic/pom.xml
+++ b/http/basic/pom.xml
@@ -21,7 +21,7 @@
     <parent>
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         <artifactId>cloudevents-parent</artifactId>
-        <version>5.0.0</version>
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         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/http/restful-ws-jakarta-integration-tests/pom.xml b/http/restful-ws-jakarta-integration-tests/pom.xml
index 992208bd..342d85d3 100644
--- a/http/restful-ws-jakarta-integration-tests/pom.xml
+++ b/http/restful-ws-jakarta-integration-tests/pom.xml
@@ -5,7 +5,7 @@
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         <groupId>io.cloudevents</groupId>
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         <relativePath>../../pom.xml</relativePath>
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     <modelVersion>4.0.0</modelVersion>
diff --git a/http/restful-ws-jakarta-integration-tests/restful-ws-jakarta-common/pom.xml b/http/restful-ws-jakarta-integration-tests/restful-ws-jakarta-common/pom.xml
index 74146341..6a7b67af 100644
--- a/http/restful-ws-jakarta-integration-tests/restful-ws-jakarta-common/pom.xml
+++ b/http/restful-ws-jakarta-integration-tests/restful-ws-jakarta-common/pom.xml
@@ -3,7 +3,7 @@
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         <groupId>io.cloudevents</groupId>
-        <version>5.0.0</version>
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     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>cloudevents-http-restful-ws-jakarta-integration-tests-common</artifactId>
diff --git a/http/restful-ws-jakarta-integration-tests/restful-ws-jersey/pom.xml b/http/restful-ws-jakarta-integration-tests/restful-ws-jersey/pom.xml
index 98296467..bcaa95e7 100644
--- a/http/restful-ws-jakarta-integration-tests/restful-ws-jersey/pom.xml
+++ b/http/restful-ws-jakarta-integration-tests/restful-ws-jersey/pom.xml
@@ -22,7 +22,7 @@
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         <groupId>io.cloudevents</groupId>
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/http/restful-ws-jakarta-integration-tests/restful-ws-liberty/pom.xml b/http/restful-ws-jakarta-integration-tests/restful-ws-liberty/pom.xml
index 2d31323e..2cddb69f 100644
--- a/http/restful-ws-jakarta-integration-tests/restful-ws-liberty/pom.xml
+++ b/http/restful-ws-jakarta-integration-tests/restful-ws-liberty/pom.xml
@@ -5,7 +5,7 @@
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         <groupId>io.cloudevents</groupId>
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+        <version>5.1.0-SNAPSHOT</version>
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/http/restful-ws-jakarta-integration-tests/restful-ws-resteasy/pom.xml b/http/restful-ws-jakarta-integration-tests/restful-ws-resteasy/pom.xml
index bf7adf5c..cec354aa 100644
--- a/http/restful-ws-jakarta-integration-tests/restful-ws-resteasy/pom.xml
+++ b/http/restful-ws-jakarta-integration-tests/restful-ws-resteasy/pom.xml
@@ -21,7 +21,7 @@
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         <groupId>io.cloudevents</groupId>
-        <version>5.0.0</version>
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     <modelVersion>4.0.0</modelVersion>
 
diff --git a/http/restful-ws-jakarta-integration-tests/restful-ws-spring/pom.xml b/http/restful-ws-jakarta-integration-tests/restful-ws-spring/pom.xml
index 80936c9a..751d9ea7 100644
--- a/http/restful-ws-jakarta-integration-tests/restful-ws-spring/pom.xml
+++ b/http/restful-ws-jakarta-integration-tests/restful-ws-spring/pom.xml
@@ -22,7 +22,7 @@
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diff --git a/http/restful-ws-jakarta/pom.xml b/http/restful-ws-jakarta/pom.xml
index ec11711e..1212f087 100644
--- a/http/restful-ws-jakarta/pom.xml
+++ b/http/restful-ws-jakarta/pom.xml
@@ -21,7 +21,7 @@
     <parent>
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         <artifactId>cloudevents-parent</artifactId>
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         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/http/vertx/pom.xml b/http/vertx/pom.xml
index f72f5749..850e2b42 100644
--- a/http/vertx/pom.xml
+++ b/http/vertx/pom.xml
@@ -22,7 +22,7 @@
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         <relativePath>../../pom.xml</relativePath>
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diff --git a/kafka/pom.xml b/kafka/pom.xml
index 08ad75bb..a81ac146 100644
--- a/kafka/pom.xml
+++ b/kafka/pom.xml
@@ -23,7 +23,7 @@
     <parent>
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         <artifactId>cloudevents-parent</artifactId>
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     <artifactId>cloudevents-kafka</artifactId>
diff --git a/pom.xml b/pom.xml
index b96c04a2..6ff9aca1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,7 @@
 
     <groupId>io.cloudevents</groupId>
     <artifactId>cloudevents-parent</artifactId>
-    <version>5.0.0</version>
+    <version>5.1.0-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <name>CloudEvents</name>
diff --git a/rocketmq/pom.xml b/rocketmq/pom.xml
index d10d56b4..b2be21b1 100644
--- a/rocketmq/pom.xml
+++ b/rocketmq/pom.xml
@@ -23,7 +23,7 @@
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     <artifactId>cloudevents-rocketmq</artifactId>
diff --git a/spring/pom.xml b/spring/pom.xml
index 6486828b..b4fa921a 100644
--- a/spring/pom.xml
+++ b/spring/pom.xml
@@ -23,7 +23,7 @@
     <parent>
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     <artifactId>cloudevents-spring</artifactId>
diff --git a/sql/pom.xml b/sql/pom.xml
index f4b4223d..698f357a 100644
--- a/sql/pom.xml
+++ b/sql/pom.xml
@@ -5,7 +5,7 @@
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     <modelVersion>4.0.0</modelVersion>