diff --git a/benchmarks/pom.xml b/benchmarks/pom.xml
index 153fe35bb..89181cfb9 100644
--- a/benchmarks/pom.xml
+++ b/benchmarks/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>client_java</artifactId>
-        <version>1.2.1</version>
+        <version>1.3.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>benchmarks</artifactId>
diff --git a/examples/example-exemplars-tail-sampling/example-greeting-service/pom.xml b/examples/example-exemplars-tail-sampling/example-greeting-service/pom.xml
index 4136bcd9d..1b20a0470 100644
--- a/examples/example-exemplars-tail-sampling/example-greeting-service/pom.xml
+++ b/examples/example-exemplars-tail-sampling/example-greeting-service/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>example-exemplars-tail-sampling</artifactId>
-        <version>1.2.1</version>
+        <version>1.3.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>example-greeting-service</artifactId>
diff --git a/examples/example-exemplars-tail-sampling/example-hello-world-app/pom.xml b/examples/example-exemplars-tail-sampling/example-hello-world-app/pom.xml
index c0cdb2009..5baa99dd8 100644
--- a/examples/example-exemplars-tail-sampling/example-hello-world-app/pom.xml
+++ b/examples/example-exemplars-tail-sampling/example-hello-world-app/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>example-exemplars-tail-sampling</artifactId>
-        <version>1.2.1</version>
+        <version>1.3.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>example-hello-world-app</artifactId>
diff --git a/examples/example-exemplars-tail-sampling/pom.xml b/examples/example-exemplars-tail-sampling/pom.xml
index e4c76db5f..9d10957fb 100644
--- a/examples/example-exemplars-tail-sampling/pom.xml
+++ b/examples/example-exemplars-tail-sampling/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>examples</artifactId>
-        <version>1.2.1</version>
+        <version>1.3.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>example-exemplars-tail-sampling</artifactId>
diff --git a/examples/example-exporter-httpserver/pom.xml b/examples/example-exporter-httpserver/pom.xml
index 4eff2570a..a48c660d2 100644
--- a/examples/example-exporter-httpserver/pom.xml
+++ b/examples/example-exporter-httpserver/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>examples</artifactId>
-        <version>1.2.1</version>
+        <version>1.3.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>example-exporter-httpserver</artifactId>
diff --git a/examples/example-exporter-multi-target/pom.xml b/examples/example-exporter-multi-target/pom.xml
index a7d749a7d..25ed35b83 100644
--- a/examples/example-exporter-multi-target/pom.xml
+++ b/examples/example-exporter-multi-target/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>examples</artifactId>
-        <version>1.2.1</version>
+        <version>1.3.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>example-exporter-multi-target</artifactId>
diff --git a/examples/example-exporter-opentelemetry/pom.xml b/examples/example-exporter-opentelemetry/pom.xml
index 791f29a96..9d5162f0d 100644
--- a/examples/example-exporter-opentelemetry/pom.xml
+++ b/examples/example-exporter-opentelemetry/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>examples</artifactId>
-        <version>1.2.1</version>
+        <version>1.3.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>example-exporter-opentelemetry</artifactId>
diff --git a/examples/example-exporter-servlet-tomcat/pom.xml b/examples/example-exporter-servlet-tomcat/pom.xml
index 65b9325f6..bf6598e6f 100644
--- a/examples/example-exporter-servlet-tomcat/pom.xml
+++ b/examples/example-exporter-servlet-tomcat/pom.xml
@@ -5,7 +5,7 @@
     <parent>
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-        <version>1.2.1</version>
+        <version>1.3.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>example-exporter-servlet-tomcat</artifactId>
diff --git a/examples/example-native-histogram/pom.xml b/examples/example-native-histogram/pom.xml
index 459fe67f8..fb86430ef 100644
--- a/examples/example-native-histogram/pom.xml
+++ b/examples/example-native-histogram/pom.xml
@@ -5,7 +5,7 @@
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     </parent>
 
     <artifactId>example-native-histogram</artifactId>
diff --git a/examples/example-prometheus-properties/pom.xml b/examples/example-prometheus-properties/pom.xml
index e55f0ab3f..6566acff3 100644
--- a/examples/example-prometheus-properties/pom.xml
+++ b/examples/example-prometheus-properties/pom.xml
@@ -5,7 +5,7 @@
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     </parent>
 
     <artifactId>example-prometheus-properties</artifactId>
diff --git a/examples/example-simpleclient-bridge/pom.xml b/examples/example-simpleclient-bridge/pom.xml
index 8644d8269..73453d437 100644
--- a/examples/example-simpleclient-bridge/pom.xml
+++ b/examples/example-simpleclient-bridge/pom.xml
@@ -5,7 +5,7 @@
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     </parent>
 
     <artifactId>example-simpleclient-bridge</artifactId>
diff --git a/examples/pom.xml b/examples/pom.xml
index 9eac97c75..c5ba5bff4 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -5,7 +5,7 @@
     <parent>
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         <artifactId>client_java</artifactId>
-        <version>1.2.1</version>
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     </parent>
 
     <artifactId>examples</artifactId>
diff --git a/integration-tests/it-common/pom.xml b/integration-tests/it-common/pom.xml
index 8cd43c2a9..e9fc2d60a 100644
--- a/integration-tests/it-common/pom.xml
+++ b/integration-tests/it-common/pom.xml
@@ -5,7 +5,7 @@
     <parent>
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     </parent>
 
     <artifactId>it-common</artifactId>
diff --git a/integration-tests/it-exporter/it-exporter-httpserver-sample/pom.xml b/integration-tests/it-exporter/it-exporter-httpserver-sample/pom.xml
index e624ede8f..0d49e17a5 100644
--- a/integration-tests/it-exporter/it-exporter-httpserver-sample/pom.xml
+++ b/integration-tests/it-exporter/it-exporter-httpserver-sample/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>it-exporter</artifactId>
-        <version>1.2.1</version>
+        <version>1.3.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>it-exporter-httpserver-sample</artifactId>
diff --git a/integration-tests/it-exporter/it-exporter-servlet-jetty-sample/pom.xml b/integration-tests/it-exporter/it-exporter-servlet-jetty-sample/pom.xml
index 07f1aea24..a17fcb2c7 100644
--- a/integration-tests/it-exporter/it-exporter-servlet-jetty-sample/pom.xml
+++ b/integration-tests/it-exporter/it-exporter-servlet-jetty-sample/pom.xml
@@ -5,7 +5,7 @@
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-        <version>1.2.1</version>
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     </parent>
 
     <artifactId>it-exporter-servlet-jetty-sample</artifactId>
diff --git a/integration-tests/it-exporter/it-exporter-servlet-tomcat-sample/pom.xml b/integration-tests/it-exporter/it-exporter-servlet-tomcat-sample/pom.xml
index 00247b3de..016433ec2 100644
--- a/integration-tests/it-exporter/it-exporter-servlet-tomcat-sample/pom.xml
+++ b/integration-tests/it-exporter/it-exporter-servlet-tomcat-sample/pom.xml
@@ -5,7 +5,7 @@
     <parent>
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         <artifactId>it-exporter</artifactId>
-        <version>1.2.1</version>
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     </parent>
 
     <artifactId>it-exporter-servlet-tomcat-sample</artifactId>
diff --git a/integration-tests/it-exporter/it-exporter-test/pom.xml b/integration-tests/it-exporter/it-exporter-test/pom.xml
index 3cdd94910..def7ff0ca 100644
--- a/integration-tests/it-exporter/it-exporter-test/pom.xml
+++ b/integration-tests/it-exporter/it-exporter-test/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>it-exporter</artifactId>
-        <version>1.2.1</version>
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     </parent>
 
     <artifactId>it-exporter-test</artifactId>
diff --git a/integration-tests/it-exporter/pom.xml b/integration-tests/it-exporter/pom.xml
index a0292b604..2d012f5dd 100644
--- a/integration-tests/it-exporter/pom.xml
+++ b/integration-tests/it-exporter/pom.xml
@@ -5,7 +5,7 @@
     <parent>
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     </parent>
 
     <artifactId>it-exporter</artifactId>
@@ -29,7 +29,7 @@
         <connection>scm:git:git@github.com:prometheus/client_java.git</connection>
         <developerConnection>scm:git:git@github.com:prometheus/client_java.git</developerConnection>
         <url>git@github.com:prometheus/client_java.git</url>
-        <tag>v1.2.1</tag>
+        <tag>HEAD</tag>
     </scm>
 
     <developers>
diff --git a/integration-tests/pom.xml b/integration-tests/pom.xml
index 79c644108..7523ab9b6 100644
--- a/integration-tests/pom.xml
+++ b/integration-tests/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>client_java</artifactId>
-        <version>1.2.1</version>
+        <version>1.3.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>integration-tests</artifactId>
diff --git a/pom.xml b/pom.xml
index 1556b6672..38b18b61f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 
     <groupId>io.prometheus</groupId>
     <artifactId>client_java</artifactId>
-    <version>1.2.1</version>
+    <version>1.3.0-SNAPSHOT</version>
 
     <name>Prometheus Metrics Library</name>
     <url>http://github.com/prometheus/client_java</url>
@@ -30,7 +30,7 @@
         <connection>scm:git:git@github.com:prometheus/client_java.git</connection>
         <developerConnection>scm:git:git@github.com:prometheus/client_java.git</developerConnection>
         <url>git@github.com:prometheus/client_java.git</url>
-        <tag>v1.2.1</tag>
+        <tag>HEAD</tag>
     </scm>
 
     <developers>
diff --git a/prometheus-metrics-bom/pom.xml b/prometheus-metrics-bom/pom.xml
index 887cfd13b..fce579b40 100644
--- a/prometheus-metrics-bom/pom.xml
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@@ -5,7 +5,7 @@
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     <artifactId>prometheus-metrics-bom</artifactId>
diff --git a/prometheus-metrics-config/pom.xml b/prometheus-metrics-config/pom.xml
index a8aa1e40f..ec8e44b56 100644
--- a/prometheus-metrics-config/pom.xml
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diff --git a/prometheus-metrics-core/pom.xml b/prometheus-metrics-core/pom.xml
index 2ecba82b8..283a00a0b 100644
--- a/prometheus-metrics-core/pom.xml
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diff --git a/prometheus-metrics-exporter-common/pom.xml b/prometheus-metrics-exporter-common/pom.xml
index 5ac0bb795..d8f89cef0 100644
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diff --git a/prometheus-metrics-exporter-httpserver/pom.xml b/prometheus-metrics-exporter-httpserver/pom.xml
index 32921708f..34908364e 100644
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diff --git a/prometheus-metrics-exporter-opentelemetry/pom.xml b/prometheus-metrics-exporter-opentelemetry/pom.xml
index db29f75bf..a54f33dae 100644
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diff --git a/prometheus-metrics-exporter-servlet-jakarta/pom.xml b/prometheus-metrics-exporter-servlet-jakarta/pom.xml
index 9f1d8eaa8..63d05d998 100644
--- a/prometheus-metrics-exporter-servlet-jakarta/pom.xml
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     <artifactId>prometheus-metrics-exporter-servlet-jakarta</artifactId>
diff --git a/prometheus-metrics-exporter-servlet-javax/pom.xml b/prometheus-metrics-exporter-servlet-javax/pom.xml
index be403ae96..41984e48b 100644
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diff --git a/prometheus-metrics-exposition-formats/pom.xml b/prometheus-metrics-exposition-formats/pom.xml
index ee7c7110e..7a0e5784b 100644
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diff --git a/prometheus-metrics-instrumentation-dropwizard5/pom.xml b/prometheus-metrics-instrumentation-dropwizard5/pom.xml
index 5c96adbd3..92fc3de4c 100644
--- a/prometheus-metrics-instrumentation-dropwizard5/pom.xml
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     <artifactId>prometheus-metrics-instrumentation-dropwizard5</artifactId>
diff --git a/prometheus-metrics-instrumentation-jvm/pom.xml b/prometheus-metrics-instrumentation-jvm/pom.xml
index 8a7d818dc..2b0208e5a 100644
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     <artifactId>prometheus-metrics-instrumentation-jvm</artifactId>
diff --git a/prometheus-metrics-model/pom.xml b/prometheus-metrics-model/pom.xml
index b5feb8533..e6ac36c97 100644
--- a/prometheus-metrics-model/pom.xml
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     <artifactId>prometheus-metrics-model</artifactId>
diff --git a/prometheus-metrics-shaded-dependencies/pom.xml b/prometheus-metrics-shaded-dependencies/pom.xml
index 7964f3e86..ded184f1a 100644
--- a/prometheus-metrics-shaded-dependencies/pom.xml
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diff --git a/prometheus-metrics-shaded-dependencies/prometheus-metrics-shaded-opentelemetry/pom.xml b/prometheus-metrics-shaded-dependencies/prometheus-metrics-shaded-opentelemetry/pom.xml
index b68c3afc7..e613da510 100644
--- a/prometheus-metrics-shaded-dependencies/prometheus-metrics-shaded-opentelemetry/pom.xml
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     <artifactId>prometheus-metrics-shaded-opentelemetry</artifactId>
diff --git a/prometheus-metrics-shaded-dependencies/prometheus-metrics-shaded-protobuf/pom.xml b/prometheus-metrics-shaded-dependencies/prometheus-metrics-shaded-protobuf/pom.xml
index 8c51e8a24..cb0ca8ee7 100644
--- a/prometheus-metrics-shaded-dependencies/prometheus-metrics-shaded-protobuf/pom.xml
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     <artifactId>prometheus-metrics-shaded-protobuf</artifactId>
diff --git a/prometheus-metrics-simpleclient-bridge/pom.xml b/prometheus-metrics-simpleclient-bridge/pom.xml
index c5fbb134b..ed4dd8921 100644
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diff --git a/prometheus-metrics-tracer/pom.xml b/prometheus-metrics-tracer/pom.xml
index 0db442a5f..5a547bfce 100644
--- a/prometheus-metrics-tracer/pom.xml
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   <artifactId>prometheus-metrics-tracer</artifactId>
diff --git a/prometheus-metrics-tracer/prometheus-metrics-tracer-common/pom.xml b/prometheus-metrics-tracer/prometheus-metrics-tracer-common/pom.xml
index 58416dd03..b44735d05 100644
--- a/prometheus-metrics-tracer/prometheus-metrics-tracer-common/pom.xml
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@@ -5,7 +5,7 @@
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   <artifactId>prometheus-metrics-tracer-common</artifactId>
diff --git a/prometheus-metrics-tracer/prometheus-metrics-tracer-initializer/pom.xml b/prometheus-metrics-tracer/prometheus-metrics-tracer-initializer/pom.xml
index 5e9b1a103..3b9aa5e5e 100644
--- a/prometheus-metrics-tracer/prometheus-metrics-tracer-initializer/pom.xml
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@@ -5,7 +5,7 @@
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-    <version>1.2.1</version>
+    <version>1.3.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>prometheus-metrics-tracer-initializer</artifactId>
diff --git a/prometheus-metrics-tracer/prometheus-metrics-tracer-otel-agent/pom.xml b/prometheus-metrics-tracer/prometheus-metrics-tracer-otel-agent/pom.xml
index 9a644e27d..a5ed05f54 100644
--- a/prometheus-metrics-tracer/prometheus-metrics-tracer-otel-agent/pom.xml
+++ b/prometheus-metrics-tracer/prometheus-metrics-tracer-otel-agent/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>io.prometheus</groupId>
     <artifactId>prometheus-metrics-tracer</artifactId>
-    <version>1.2.1</version>
+    <version>1.3.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>prometheus-metrics-tracer-otel-agent</artifactId>
diff --git a/prometheus-metrics-tracer/prometheus-metrics-tracer-otel/pom.xml b/prometheus-metrics-tracer/prometheus-metrics-tracer-otel/pom.xml
index b6b334be4..f10225ae1 100644
--- a/prometheus-metrics-tracer/prometheus-metrics-tracer-otel/pom.xml
+++ b/prometheus-metrics-tracer/prometheus-metrics-tracer-otel/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>io.prometheus</groupId>
     <artifactId>prometheus-metrics-tracer</artifactId>
-    <version>1.2.1</version>
+    <version>1.3.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>prometheus-metrics-tracer-otel</artifactId>