diff --git a/docs/pom.xml b/docs/pom.xml
index a06de68133..26d3321311 100644
--- a/docs/pom.xml
+++ b/docs/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>docs</artifactId>
diff --git a/metrics-annotation/pom.xml b/metrics-annotation/pom.xml
index a2a8672b21..801c952b65 100644
--- a/metrics-annotation/pom.xml
+++ b/metrics-annotation/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <properties>
diff --git a/metrics-benchmarks/pom.xml b/metrics-benchmarks/pom.xml
index 423f8f4c77..227867021c 100644
--- a/metrics-benchmarks/pom.xml
+++ b/metrics-benchmarks/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-benchmarks</artifactId>
diff --git a/metrics-bom/pom.xml b/metrics-bom/pom.xml
index cab74eea6a..192d16a9c9 100644
--- a/metrics-bom/pom.xml
+++ b/metrics-bom/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-bom</artifactId>
diff --git a/metrics-caffeine/pom.xml b/metrics-caffeine/pom.xml
index 325a6f0f9d..a9016f1a56 100644
--- a/metrics-caffeine/pom.xml
+++ b/metrics-caffeine/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-caffeine</artifactId>
diff --git a/metrics-caffeine3/pom.xml b/metrics-caffeine3/pom.xml
index 2ada0a197f..ef8e4b20f9 100644
--- a/metrics-caffeine3/pom.xml
+++ b/metrics-caffeine3/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-caffeine3</artifactId>
diff --git a/metrics-collectd/pom.xml b/metrics-collectd/pom.xml
index 1820ad75d0..e80025e8d9 100644
--- a/metrics-collectd/pom.xml
+++ b/metrics-collectd/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-collectd</artifactId>
diff --git a/metrics-core/pom.xml b/metrics-core/pom.xml
index ee63954276..33b295d2ac 100644
--- a/metrics-core/pom.xml
+++ b/metrics-core/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-core</artifactId>
diff --git a/metrics-ehcache/pom.xml b/metrics-ehcache/pom.xml
index 8ee4d1129d..18e6206333 100644
--- a/metrics-ehcache/pom.xml
+++ b/metrics-ehcache/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-ehcache</artifactId>
diff --git a/metrics-graphite/pom.xml b/metrics-graphite/pom.xml
index c3dabbc012..7b30d06b1e 100644
--- a/metrics-graphite/pom.xml
+++ b/metrics-graphite/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-graphite</artifactId>
diff --git a/metrics-healthchecks/pom.xml b/metrics-healthchecks/pom.xml
index 36389f88e6..e45804e7dc 100644
--- a/metrics-healthchecks/pom.xml
+++ b/metrics-healthchecks/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-healthchecks</artifactId>
diff --git a/metrics-httpasyncclient/pom.xml b/metrics-httpasyncclient/pom.xml
index 4eb05644d8..b35b59fdd4 100644
--- a/metrics-httpasyncclient/pom.xml
+++ b/metrics-httpasyncclient/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-httpasyncclient</artifactId>
diff --git a/metrics-httpclient/pom.xml b/metrics-httpclient/pom.xml
index ec7a985669..85b090616b 100644
--- a/metrics-httpclient/pom.xml
+++ b/metrics-httpclient/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-httpclient</artifactId>
diff --git a/metrics-httpclient5/pom.xml b/metrics-httpclient5/pom.xml
index 40da9da5cd..173190b222 100644
--- a/metrics-httpclient5/pom.xml
+++ b/metrics-httpclient5/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-httpclient5</artifactId>
diff --git a/metrics-jakarta-servlet/pom.xml b/metrics-jakarta-servlet/pom.xml
index d3a7e3f6c8..0f37a079b9 100644
--- a/metrics-jakarta-servlet/pom.xml
+++ b/metrics-jakarta-servlet/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jakarta-servlet</artifactId>
diff --git a/metrics-jakarta-servlet6/pom.xml b/metrics-jakarta-servlet6/pom.xml
index 2fb0cb642f..70c5950447 100644
--- a/metrics-jakarta-servlet6/pom.xml
+++ b/metrics-jakarta-servlet6/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jakarta-servlet6</artifactId>
diff --git a/metrics-jakarta-servlets/pom.xml b/metrics-jakarta-servlets/pom.xml
index b1ba16e82d..e295576761 100644
--- a/metrics-jakarta-servlets/pom.xml
+++ b/metrics-jakarta-servlets/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jakarta-servlets</artifactId>
diff --git a/metrics-jcache/pom.xml b/metrics-jcache/pom.xml
index d87244a35d..00b844cf48 100644
--- a/metrics-jcache/pom.xml
+++ b/metrics-jcache/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jcache</artifactId>
diff --git a/metrics-jcstress/pom.xml b/metrics-jcstress/pom.xml
index 706c60f090..9c4b0ffdcd 100644
--- a/metrics-jcstress/pom.xml
+++ b/metrics-jcstress/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <artifactId>metrics-parent</artifactId>
         <groupId>io.dropwizard.metrics</groupId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jcstress</artifactId>
diff --git a/metrics-jdbi/pom.xml b/metrics-jdbi/pom.xml
index 73f1691d5b..1592ada48d 100644
--- a/metrics-jdbi/pom.xml
+++ b/metrics-jdbi/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jdbi</artifactId>
diff --git a/metrics-jdbi3/pom.xml b/metrics-jdbi3/pom.xml
index c522a371c9..61b19d34f7 100644
--- a/metrics-jdbi3/pom.xml
+++ b/metrics-jdbi3/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jdbi3</artifactId>
diff --git a/metrics-jersey2/pom.xml b/metrics-jersey2/pom.xml
index abe3be1222..e328abec66 100644
--- a/metrics-jersey2/pom.xml
+++ b/metrics-jersey2/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jersey2</artifactId>
diff --git a/metrics-jersey3/pom.xml b/metrics-jersey3/pom.xml
index 3b616ca2a9..da1c8d322a 100644
--- a/metrics-jersey3/pom.xml
+++ b/metrics-jersey3/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jersey3</artifactId>
diff --git a/metrics-jersey31/pom.xml b/metrics-jersey31/pom.xml
index 7bb096a65b..0ee96075d5 100644
--- a/metrics-jersey31/pom.xml
+++ b/metrics-jersey31/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jersey31</artifactId>
diff --git a/metrics-jetty10/pom.xml b/metrics-jetty10/pom.xml
index ffdad47474..dc4a09d972 100644
--- a/metrics-jetty10/pom.xml
+++ b/metrics-jetty10/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jetty10</artifactId>
diff --git a/metrics-jetty11/pom.xml b/metrics-jetty11/pom.xml
index 25a79350c1..473e10b8d3 100644
--- a/metrics-jetty11/pom.xml
+++ b/metrics-jetty11/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jetty11</artifactId>
diff --git a/metrics-jetty12-ee10/pom.xml b/metrics-jetty12-ee10/pom.xml
index 2a8604bac3..a2f85b0587 100644
--- a/metrics-jetty12-ee10/pom.xml
+++ b/metrics-jetty12-ee10/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jetty12-ee10</artifactId>
diff --git a/metrics-jetty12/pom.xml b/metrics-jetty12/pom.xml
index 933be07ec6..734e37d17c 100644
--- a/metrics-jetty12/pom.xml
+++ b/metrics-jetty12/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jetty12</artifactId>
diff --git a/metrics-jetty9/pom.xml b/metrics-jetty9/pom.xml
index 69e507c9ce..37bae918a2 100644
--- a/metrics-jetty9/pom.xml
+++ b/metrics-jetty9/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jetty9</artifactId>
diff --git a/metrics-jmx/pom.xml b/metrics-jmx/pom.xml
index 0470ff171f..1b7554bb78 100644
--- a/metrics-jmx/pom.xml
+++ b/metrics-jmx/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>metrics-parent</artifactId>
         <groupId>io.dropwizard.metrics</groupId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/metrics-json/pom.xml b/metrics-json/pom.xml
index f833b68652..00212b99f6 100644
--- a/metrics-json/pom.xml
+++ b/metrics-json/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-json</artifactId>
diff --git a/metrics-jvm/pom.xml b/metrics-jvm/pom.xml
index 5eb5c763fd..56bf23b12e 100644
--- a/metrics-jvm/pom.xml
+++ b/metrics-jvm/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-jvm</artifactId>
diff --git a/metrics-log4j2/pom.xml b/metrics-log4j2/pom.xml
index e29047f418..d08eeb31bd 100644
--- a/metrics-log4j2/pom.xml
+++ b/metrics-log4j2/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-log4j2</artifactId>
diff --git a/metrics-logback/pom.xml b/metrics-logback/pom.xml
index 1fec53a3b5..551f1d1365 100644
--- a/metrics-logback/pom.xml
+++ b/metrics-logback/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-logback</artifactId>
diff --git a/metrics-logback13/pom.xml b/metrics-logback13/pom.xml
index 877a1b4672..fbef0c5bd7 100644
--- a/metrics-logback13/pom.xml
+++ b/metrics-logback13/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-logback13</artifactId>
diff --git a/metrics-logback14/pom.xml b/metrics-logback14/pom.xml
index 7502960621..e24fc18d3e 100644
--- a/metrics-logback14/pom.xml
+++ b/metrics-logback14/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-logback14</artifactId>
diff --git a/metrics-servlet/pom.xml b/metrics-servlet/pom.xml
index 4941d9280f..a935384405 100644
--- a/metrics-servlet/pom.xml
+++ b/metrics-servlet/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-servlet</artifactId>
diff --git a/metrics-servlets/pom.xml b/metrics-servlets/pom.xml
index a18e47bdf1..74b41f54a7 100644
--- a/metrics-servlets/pom.xml
+++ b/metrics-servlets/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-parent</artifactId>
-        <version>4.2.21-SNAPSHOT</version>
+        <version>4.2.21</version>
     </parent>
 
     <artifactId>metrics-servlets</artifactId>
diff --git a/pom.xml b/pom.xml
index ec638ecb6d..473eb2cbce 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
     <groupId>io.dropwizard.metrics</groupId>
     <artifactId>metrics-parent</artifactId>
-    <version>4.2.21-SNAPSHOT</version>
+    <version>4.2.21</version>
     <packaging>pom</packaging>
     <name>Metrics Parent</name>
     <description>
@@ -52,7 +52,7 @@
     </modules>
 
     <properties>
-        <project.build.outputTimestamp>2023-09-26T11:50:18Z</project.build.outputTimestamp>
+        <project.build.outputTimestamp>2023-10-13T11:40:34Z</project.build.outputTimestamp>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
@@ -117,7 +117,7 @@
         <connection>scm:git:git://github.com/dropwizard/metrics.git</connection>
         <developerConnection>scm:git:git@github.com:dropwizard/metrics.git</developerConnection>
         <url>https://github.com/dropwizard/metrics/</url>
-        <tag>HEAD</tag>
+        <tag>v4.2.21</tag>
     </scm>
 
     <issueManagement>