diff --git a/b/.idea/libraries/extlibs.xml b/b/.idea/libraries/extlibs.xml
index 3883134cc..8f74320f3 100644
--- a/b/.idea/libraries/extlibs.xml
+++ b/b/.idea/libraries/extlibs.xml
@@ -42,12 +42,12 @@
       <root url="jar://$PROJECT_DIR$/extlibs/jnr-posix-3.1.22.jar!/" />
       <root url="jar://$PROJECT_DIR$/extlibs/junit-4.13.2.jar!/" />
       <root url="jar://$PROJECT_DIR$/extlibs/mysql-connector-java-5.1.42-bin.jar!/" />
-      <root url="jar://$PROJECT_DIR$/extlibs/netty-buffer-4.2.12.Final.jar!/" />
-      <root url="jar://$PROJECT_DIR$/extlibs/netty-codec-base-4.2.12.Final.jar!/" />
-      <root url="jar://$PROJECT_DIR$/extlibs/netty-common-4.2.12.Final.jar!/" />
-      <root url="jar://$PROJECT_DIR$/extlibs/netty-handler-4.2.12.Final.jar!/" />
-      <root url="jar://$PROJECT_DIR$/extlibs/netty-resolver-4.2.12.Final.jar!/" />
-      <root url="jar://$PROJECT_DIR$/extlibs/netty-transport-4.2.12.Final.jar!/" />
+      <root url="jar://$PROJECT_DIR$/extlibs/netty-buffer-4.2.13.Final.jar!/" />
+      <root url="jar://$PROJECT_DIR$/extlibs/netty-codec-base-4.2.13.Final.jar!/" />
+      <root url="jar://$PROJECT_DIR$/extlibs/netty-common-4.2.13.Final.jar!/" />
+      <root url="jar://$PROJECT_DIR$/extlibs/netty-handler-4.2.13.Final.jar!/" />
+      <root url="jar://$PROJECT_DIR$/extlibs/netty-resolver-4.2.13.Final.jar!/" />
+      <root url="jar://$PROJECT_DIR$/extlibs/netty-transport-4.2.13.Final.jar!/" />
       <root url="jar://$PROJECT_DIR$/extlibs/postgresql-42.1.1.jre7.jar!/" />
       <root url="jar://$PROJECT_DIR$/extlibs/profile.jar!/" />
       <root url="jar://$PROJECT_DIR$/extlibs/jakarta.servlet-api-6.1.0.jar!/" />
diff --git a/build.xml b/build.xml
index 7411bf26b..f7a1507be 100644
--- a/build.xml
+++ b/build.xml
@@ -236,12 +236,12 @@ An example ant.properties file:
                 <file name="jnr-netdb-1.2.0.jar"/>
                 <file name="jnr-posix-3.1.22.jar"/>
                 <file name="jline-2.14.6.jar"/>
-                <file name="netty-buffer-4.2.12.Final.jar"/>
-                <file name="netty-codec-base-4.2.12.Final.jar"/>
-                <file name="netty-common-4.2.12.Final.jar"/>
-                <file name="netty-handler-4.2.12.Final.jar"/>
-                <file name="netty-resolver-4.2.12.Final.jar"/>
-                <file name="netty-transport-4.2.12.Final.jar"/>
+                <file name="netty-buffer-4.2.13.Final.jar"/>
+                <file name="netty-codec-base-4.2.13.Final.jar"/>
+                <file name="netty-common-4.2.13.Final.jar"/>
+                <file name="netty-handler-4.2.13.Final.jar"/>
+                <file name="netty-resolver-4.2.13.Final.jar"/>
+                <file name="netty-transport-4.2.13.Final.jar"/>
             </filelist>
         </path>
 
@@ -844,17 +844,17 @@ The text for an official release would continue like ...
             <rule pattern="com.google.**" result="org.python.google.@1"/>
             <zipfileset src="extlibs/icu4j-78.3.jar"/>
             <rule pattern="com.ibm.icu.**" result="org.python.icu.@1"/>
-            <zipfileset src="extlibs/netty-buffer-4.2.12.Final.jar" excludes="META-INF/**"/>
+            <zipfileset src="extlibs/netty-buffer-4.2.13.Final.jar" excludes="META-INF/**"/>
             <rule pattern="io.netty.**" result="org.python.netty.@1"/>
-            <zipfileset src="extlibs/netty-codec-base-4.2.12.Final.jar" excludes="META-INF/**"/>
+            <zipfileset src="extlibs/netty-codec-base-4.2.13.Final.jar" excludes="META-INF/**"/>
             <rule pattern="io.netty.**" result="org.python.netty.@1"/>
-            <zipfileset src="extlibs/netty-common-4.2.12.Final.jar" excludes="META-INF/**"/>
+            <zipfileset src="extlibs/netty-common-4.2.13.Final.jar" excludes="META-INF/**"/>
             <rule pattern="io.netty.**" result="org.python.netty.@1"/>
-            <zipfileset src="extlibs/netty-handler-4.2.12.Final.jar" excludes="META-INF/**"/>
+            <zipfileset src="extlibs/netty-handler-4.2.13.Final.jar" excludes="META-INF/**"/>
             <rule pattern="io.netty.**" result="org.python.netty.@1"/>
-            <zipfileset src="extlibs/netty-resolver-4.2.12.Final.jar" excludes="META-INF/**"/>
+            <zipfileset src="extlibs/netty-resolver-4.2.13.Final.jar" excludes="META-INF/**"/>
             <rule pattern="io.netty.**" result="org.python.netty.@1"/>
-            <zipfileset src="extlibs/netty-transport-4.2.12.Final.jar" excludes="META-INF/**"/>
+            <zipfileset src="extlibs/netty-transport-4.2.13.Final.jar" excludes="META-INF/**"/>
             <rule pattern="io.netty.**" result="org.python.netty.@1"/>
             <zipfileset src="${extlibs.dir}/java-sizeof-0.0.5.jar"/>
             <rule pattern="com.carrotsearch.sizeof.**" result="org.python.sizeof.@1"/>
diff --git a/extlibs/netty-buffer-4.2.12.Final.jar b/extlibs/netty-buffer-4.2.13.Final.jar
similarity index 79%
rename from extlibs/netty-buffer-4.2.12.Final.jar
rename to extlibs/netty-buffer-4.2.13.Final.jar
index 0fc289ca7..bb8038875 100644
Binary files a/extlibs/netty-buffer-4.2.12.Final.jar and b/extlibs/netty-buffer-4.2.13.Final.jar differ
diff --git a/extlibs/netty-codec-base-4.2.12.Final.jar b/extlibs/netty-codec-base-4.2.13.Final.jar
similarity index 75%
rename from extlibs/netty-codec-base-4.2.12.Final.jar
rename to extlibs/netty-codec-base-4.2.13.Final.jar
index d172c43ad..6348ce091 100644
Binary files a/extlibs/netty-codec-base-4.2.12.Final.jar and b/extlibs/netty-codec-base-4.2.13.Final.jar differ
diff --git a/extlibs/netty-common-4.2.12.Final.jar b/extlibs/netty-common-4.2.13.Final.jar
similarity index 59%
rename from extlibs/netty-common-4.2.12.Final.jar
rename to extlibs/netty-common-4.2.13.Final.jar
index 2309ea36a..10e6849ec 100644
Binary files a/extlibs/netty-common-4.2.12.Final.jar and b/extlibs/netty-common-4.2.13.Final.jar differ
diff --git a/extlibs/netty-handler-4.2.12.Final.jar b/extlibs/netty-handler-4.2.13.Final.jar
similarity index 86%
rename from extlibs/netty-handler-4.2.12.Final.jar
rename to extlibs/netty-handler-4.2.13.Final.jar
index 1b07e04b4..8c41eefb7 100644
Binary files a/extlibs/netty-handler-4.2.12.Final.jar and b/extlibs/netty-handler-4.2.13.Final.jar differ
diff --git a/extlibs/netty-resolver-4.2.12.Final.jar b/extlibs/netty-resolver-4.2.13.Final.jar
similarity index 77%
rename from extlibs/netty-resolver-4.2.12.Final.jar
rename to extlibs/netty-resolver-4.2.13.Final.jar
index 002e5d434..4ec6beb18 100644
Binary files a/extlibs/netty-resolver-4.2.12.Final.jar and b/extlibs/netty-resolver-4.2.13.Final.jar differ
diff --git a/extlibs/netty-transport-4.2.12.Final.jar b/extlibs/netty-transport-4.2.13.Final.jar
similarity index 72%
rename from extlibs/netty-transport-4.2.12.Final.jar
rename to extlibs/netty-transport-4.2.13.Final.jar
index 9f8cb8dbb..ff77c9d38 100644
Binary files a/extlibs/netty-transport-4.2.12.Final.jar and b/extlibs/netty-transport-4.2.13.Final.jar differ
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index c7d35e309..54f6282ce 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -17,7 +17,7 @@ rev_jnr_ffi =             "2.2.19"
 rev_jnr_netdb =           "1.2.0"
 rev_jnr_posix =           "3.1.22"
 rev_junit =               "4.13.2"
-rev_netty =               "4.2.12.Final"
+rev_netty =               "4.2.13.Final"
 rev_oracle =              "23.26.1.0.0"
 
 [libraries]