diff --git a/benchmarks/pom.xml b/benchmarks/pom.xml
index 80f5c594a..f9d2f1866 100644
--- a/benchmarks/pom.xml
+++ b/benchmarks/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>client_java</artifactId>
-        <version>1.3.0</version>
+        <version>1.4.0-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 181384a0b..72ebcbedd 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>1.3.0</version>
+        <version>1.4.0-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 c393bfcd6..ae0b36799 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>1.3.0</version>
+        <version>1.4.0-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 cdf55bd6e..ed3cb087f 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>1.3.0</version>
+        <version>1.4.0-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 6b6da8ea7..189e74c6c 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>1.3.0</version>
+        <version>1.4.0-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 60a6ceeeb..0f1b03cff 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>1.3.0</version>
+        <version>1.4.0-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 e775c80c6..29c9ab152 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>1.3.0</version>
+        <version>1.4.0-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 3f83002ab..1f9df84c5 100644
--- a/examples/example-exporter-servlet-tomcat/pom.xml
+++ b/examples/example-exporter-servlet-tomcat/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>examples</artifactId>
-        <version>1.3.0</version>
+        <version>1.4.0-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 494c777cd..336a4d05a 100644
--- a/examples/example-native-histogram/pom.xml
+++ b/examples/example-native-histogram/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>examples</artifactId>
-        <version>1.3.0</version>
+        <version>1.4.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>example-native-histogram</artifactId>
diff --git a/examples/example-prometheus-properties/pom.xml b/examples/example-prometheus-properties/pom.xml
index f6be3b751..62b44cfec 100644
--- a/examples/example-prometheus-properties/pom.xml
+++ b/examples/example-prometheus-properties/pom.xml
@@ -5,7 +5,7 @@
     <parent>
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         <artifactId>examples</artifactId>
-        <version>1.3.0</version>
+        <version>1.4.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>example-prometheus-properties</artifactId>
diff --git a/examples/example-simpleclient-bridge/pom.xml b/examples/example-simpleclient-bridge/pom.xml
index a256ac54e..d874aacb9 100644
--- a/examples/example-simpleclient-bridge/pom.xml
+++ b/examples/example-simpleclient-bridge/pom.xml
@@ -5,7 +5,7 @@
     <parent>
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-        <version>1.3.0</version>
+        <version>1.4.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>example-simpleclient-bridge</artifactId>
diff --git a/examples/pom.xml b/examples/pom.xml
index 3b043e6f5..a1eb17226 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>client_java</artifactId>
-        <version>1.3.0</version>
+        <version>1.4.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>examples</artifactId>
diff --git a/integration-tests/it-common/pom.xml b/integration-tests/it-common/pom.xml
index bd0bf5e04..195a10caa 100644
--- a/integration-tests/it-common/pom.xml
+++ b/integration-tests/it-common/pom.xml
@@ -5,7 +5,7 @@
     <parent>
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         <artifactId>integration-tests</artifactId>
-        <version>1.3.0</version>
+        <version>1.4.0-SNAPSHOT</version>
     </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 2050a3bf8..2743b3933 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>1.3.0</version>
+        <version>1.4.0-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 7be578a17..622f93254 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 @@
     <parent>
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         <artifactId>it-exporter</artifactId>
-        <version>1.3.0</version>
+        <version>1.4.0-SNAPSHOT</version>
     </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 0599f2e53..bb78e0543 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>1.3.0</version>
+        <version>1.4.0-SNAPSHOT</version>
     </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 842c793d8..899a17f10 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>1.3.0</version>
+        <version>1.4.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>it-exporter-test</artifactId>
diff --git a/integration-tests/it-exporter/pom.xml b/integration-tests/it-exporter/pom.xml
index d8636141c..694cee959 100644
--- a/integration-tests/it-exporter/pom.xml
+++ b/integration-tests/it-exporter/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>integration-tests</artifactId>
-        <version>1.3.0</version>
+        <version>1.4.0-SNAPSHOT</version>
     </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>v1.3.0</tag>
+        <tag>HEAD</tag>
     </scm>
 
     <developers>
diff --git a/integration-tests/it-pushgateway/pom.xml b/integration-tests/it-pushgateway/pom.xml
index 8d53a7cac..25ce45b12 100644
--- a/integration-tests/it-pushgateway/pom.xml
+++ b/integration-tests/it-pushgateway/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.prometheus</groupId>
         <artifactId>integration-tests</artifactId>
-        <version>1.3.0</version>
+        <version>1.4.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>it-pushgateway</artifactId>
diff --git a/integration-tests/pom.xml b/integration-tests/pom.xml
index e49ef85fa..2ed77b95d 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>1.3.0</version>
+        <version>1.4.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>integration-tests</artifactId>
diff --git a/pom.xml b/pom.xml
index 8fdda21af..e678cf66d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 
     <groupId>io.prometheus</groupId>
     <artifactId>client_java</artifactId>
-    <version>1.3.0</version>
+    <version>1.4.0-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>v1.3.0</tag>
+        <tag>HEAD</tag>
     </scm>
 
     <developers>
diff --git a/prometheus-metrics-bom/pom.xml b/prometheus-metrics-bom/pom.xml
index 6768f9194..f316bb141 100644
--- a/prometheus-metrics-bom/pom.xml
+++ b/prometheus-metrics-bom/pom.xml
@@ -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 7463d4eed..2d1e95c88 100644
--- a/prometheus-metrics-config/pom.xml
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     <artifactId>prometheus-metrics-config</artifactId>
diff --git a/prometheus-metrics-core/pom.xml b/prometheus-metrics-core/pom.xml
index 94fe8990e..fd3c9a04f 100644
--- a/prometheus-metrics-core/pom.xml
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@@ -5,7 +5,7 @@
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     <artifactId>prometheus-metrics-core</artifactId>
diff --git a/prometheus-metrics-exporter-common/pom.xml b/prometheus-metrics-exporter-common/pom.xml
index 4dd28da79..f65aabf68 100644
--- a/prometheus-metrics-exporter-common/pom.xml
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diff --git a/prometheus-metrics-exporter-httpserver/pom.xml b/prometheus-metrics-exporter-httpserver/pom.xml
index c4861dfae..45fbfe18f 100644
--- a/prometheus-metrics-exporter-httpserver/pom.xml
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diff --git a/prometheus-metrics-exporter-opentelemetry/pom.xml b/prometheus-metrics-exporter-opentelemetry/pom.xml
index 1a107390d..27c8cedbb 100644
--- a/prometheus-metrics-exporter-opentelemetry/pom.xml
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diff --git a/prometheus-metrics-exporter-pushgateway/pom.xml b/prometheus-metrics-exporter-pushgateway/pom.xml
index fe5da088e..8b6e22525 100644
--- a/prometheus-metrics-exporter-pushgateway/pom.xml
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@@ -5,7 +5,7 @@
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     <artifactId>prometheus-metrics-exporter-pushgateway</artifactId>
diff --git a/prometheus-metrics-exporter-servlet-jakarta/pom.xml b/prometheus-metrics-exporter-servlet-jakarta/pom.xml
index 4f802d3e6..18559c8e7 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 65e8b8bb9..b930dd9cf 100644
--- a/prometheus-metrics-exporter-servlet-javax/pom.xml
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     <artifactId>prometheus-metrics-exporter-servlet-javax</artifactId>
diff --git a/prometheus-metrics-exposition-formats/pom.xml b/prometheus-metrics-exposition-formats/pom.xml
index 6e574f04d..027faa19b 100644
--- a/prometheus-metrics-exposition-formats/pom.xml
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@@ -5,7 +5,7 @@
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     <artifactId>prometheus-metrics-exposition-formats</artifactId>
diff --git a/prometheus-metrics-instrumentation-dropwizard5/pom.xml b/prometheus-metrics-instrumentation-dropwizard5/pom.xml
index d87da6b6b..085e6de74 100644
--- a/prometheus-metrics-instrumentation-dropwizard5/pom.xml
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@@ -5,7 +5,7 @@
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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 47f3ba704..c847500db 100644
--- a/prometheus-metrics-instrumentation-jvm/pom.xml
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@@ -5,7 +5,7 @@
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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 24f3c23e4..8d3051dfe 100644
--- a/prometheus-metrics-model/pom.xml
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@@ -5,7 +5,7 @@
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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 70d6f0754..49b015e49 100644
--- a/prometheus-metrics-shaded-dependencies/pom.xml
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@@ -5,7 +5,7 @@
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     </parent>
 
     <artifactId>prometheus-metrics-shaded-dependencies</artifactId>
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 878872ca8..415735290 100644
--- a/prometheus-metrics-shaded-dependencies/prometheus-metrics-shaded-opentelemetry/pom.xml
+++ b/prometheus-metrics-shaded-dependencies/prometheus-metrics-shaded-opentelemetry/pom.xml
@@ -5,7 +5,7 @@
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     </parent>
 
     <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 5a1b90017..9f9d46f14 100644
--- a/prometheus-metrics-shaded-dependencies/prometheus-metrics-shaded-protobuf/pom.xml
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@@ -5,7 +5,7 @@
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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 defa85806..ba88815f7 100644
--- a/prometheus-metrics-simpleclient-bridge/pom.xml
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@@ -5,7 +5,7 @@
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     </parent>
 
     <artifactId>prometheus-metrics-simpleclient-bridge</artifactId>
diff --git a/prometheus-metrics-tracer/pom.xml b/prometheus-metrics-tracer/pom.xml
index c67dd26bb..2d10bca44 100644
--- a/prometheus-metrics-tracer/pom.xml
+++ b/prometheus-metrics-tracer/pom.xml
@@ -5,7 +5,7 @@
   <parent>
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-    <version>1.3.0</version>
+    <version>1.4.0-SNAPSHOT</version>
   </parent>
 
   <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 4791ca998..dee1f5a43 100644
--- a/prometheus-metrics-tracer/prometheus-metrics-tracer-common/pom.xml
+++ b/prometheus-metrics-tracer/prometheus-metrics-tracer-common/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>io.prometheus</groupId>
     <artifactId>prometheus-metrics-tracer</artifactId>
-    <version>1.3.0</version>
+    <version>1.4.0-SNAPSHOT</version>
   </parent>
 
   <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 9a3bd3c6a..4898db46f 100644
--- a/prometheus-metrics-tracer/prometheus-metrics-tracer-initializer/pom.xml
+++ b/prometheus-metrics-tracer/prometheus-metrics-tracer-initializer/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>io.prometheus</groupId>
     <artifactId>prometheus-metrics-tracer</artifactId>
-    <version>1.3.0</version>
+    <version>1.4.0-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 4d6190b34..66a15e397 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>1.3.0</version>
+    <version>1.4.0-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 c7f0d9689..2c91242e1 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>1.3.0</version>
+    <version>1.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>prometheus-metrics-tracer-otel</artifactId>