diff --git a/api/pom.xml b/api/pom.xml
index 9761a38d..aa12010e 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -20,7 +20,7 @@
         <!-- This is just for now and will not work if the API has a separate release cycle than the rest. -->
         <groupId>org.eclipse.microprofile.metrics</groupId>
         <artifactId>microprofile-metrics-parent</artifactId>
-        <version>4.0-SNAPSHOT</version>
+        <version>4.0-RC4</version>
     </parent>
 
     <artifactId>microprofile-metrics-api</artifactId>
diff --git a/pom.xml b/pom.xml
index a92dd2ef..53638a88 100644
--- a/pom.xml
+++ b/pom.xml
@@ -24,7 +24,7 @@
 
     <groupId>org.eclipse.microprofile.metrics</groupId>
     <artifactId>microprofile-metrics-parent</artifactId>
-    <version>4.0-SNAPSHOT</version>
+    <version>4.0-RC4</version>
     <packaging>pom</packaging>
     <name>MicroProfile Metrics</name>
     <description>Eclipse MicroProfile Metrics Feature :: Parent POM</description>
@@ -56,7 +56,7 @@
         <url>https://github.com/eclipse/microprofile-metrics</url>
         <connection>scm:git:https://github.com/eclipse/microprofile-metrics.git</connection>
         <developerConnection>scm:git:git@github.com:eclipse/microprofile-metrics.git</developerConnection>
-        <tag>HEAD</tag>
+        <tag>4.0-RC4</tag>
     </scm>
 
     <issueManagement>
diff --git a/spec/pom.xml b/spec/pom.xml
index db3b3bac..bf21213f 100644
--- a/spec/pom.xml
+++ b/spec/pom.xml
@@ -20,7 +20,7 @@
         <!-- This is just for now and will not work if the API has a separate release cycle than the rest. -->
         <groupId>org.eclipse.microprofile.metrics</groupId>
         <artifactId>microprofile-metrics-parent</artifactId>
-        <version>4.0-SNAPSHOT</version>
+        <version>4.0-RC4</version>
     </parent>
 
     <artifactId>microprofile-metrics-spec</artifactId>
diff --git a/tck/api/pom.xml b/tck/api/pom.xml
index fd6b0e60..3babb3f5 100644
--- a/tck/api/pom.xml
+++ b/tck/api/pom.xml
@@ -13,7 +13,7 @@
         <!-- This is just for now and will not work if the API has a separate release cycle than the rest. -->
         <groupId>org.eclipse.microprofile.metrics</groupId>
         <artifactId>microprofile-metrics-parent</artifactId>
-        <version>4.0-SNAPSHOT</version>
+        <version>4.0-RC4</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/tck/optional/pom.xml b/tck/optional/pom.xml
index 2aabc19e..9b7875e6 100644
--- a/tck/optional/pom.xml
+++ b/tck/optional/pom.xml
@@ -20,7 +20,7 @@
         <!-- This is just for now and will not work if the API has a separate release cycle than the rest. -->
         <groupId>org.eclipse.microprofile.metrics</groupId>
         <artifactId>microprofile-metrics-parent</artifactId>
-        <version>4.0-SNAPSHOT</version>
+        <version>4.0-RC4</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
 
diff --git a/tck/rest/pom.xml b/tck/rest/pom.xml
index aee783b1..8036aed2 100644
--- a/tck/rest/pom.xml
+++ b/tck/rest/pom.xml
@@ -20,7 +20,7 @@
         <!-- This is just for now and will not work if the API has a separate release cycle than the rest. -->
         <groupId>org.eclipse.microprofile.metrics</groupId>
         <artifactId>microprofile-metrics-parent</artifactId>
-        <version>4.0-SNAPSHOT</version>
+        <version>4.0-RC4</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>