Bump to Netty 4.1.72 CTR
diff --git a/CHANGELOG.asciidoc b/CHANGELOG.asciidoc
index d4912d1..ed87ae9 100644
--- a/CHANGELOG.asciidoc
+++ b/CHANGELOG.asciidoc
@@ -29,7 +29,7 @@
 * Fixed a `NullPointerException` that could occur during a failed `Connection` initialization due to uninstantiated `AtomicInteger`.
 * Minor changes to the initialization of Java driver `Cluster` and `Client` such that hosts are marked as available only after successfully initializing connection pools.
 * `NoHostAvailableException` now contains a cause for the failure.
-* Bumped to Netty 4.1.68.
+* Bumped to Netty 4.1.72.
 
 [[release-3-4-12]]
 === TinkerPop 3.4.12 (Release Date: July 19, 2021)
diff --git a/pom.xml b/pom.xml
index b2ad55f..5503889 100644
--- a/pom.xml
+++ b/pom.xml
@@ -156,7 +156,7 @@
         <jcabi.version>1.1</jcabi.version>
         <log4j.version>1.2.17</log4j.version>
         <metrics.version>3.0.2</metrics.version>
-        <netty.version>4.1.68.Final</netty.version>
+        <netty.version>4.1.72.Final</netty.version>
         <slf4j.version>1.7.25</slf4j.version>
         <snakeyaml.version>1.27</snakeyaml.version>
         <spark.version>2.4.0</spark.version>