diff --git a/community/java-lz4/0003-openjdk21-compatibility.patch b/community/java-lz4/0003-openjdk21-compatibility.patch
new file mode 100644
index 00000000000..dde2d72c88a
--- /dev/null
+++ b/community/java-lz4/0003-openjdk21-compatibility.patch
@@ -0,0 +1,35 @@
+From: Celeste <20312-Celeste@users.gitlab.alpinelinux.org>
+Date: Sun, 05 May 2024 17:21:00 +0000
+Subject: [PATCH] OpenJDK 21 compatibility
+
+  - Update -source/-target to 8, as OpenJDK 21
+    has removed support for 7.
+
+  - Upgrade mvel to 2.5.2, which fixes the
+    "java.lang.ClassNotFoundException: java.lang.Compiler" error
+    due to OpenJDK 21 removing that class.
+
+---
+
+--- a/build.xml
++++ b/build.xml
+@@ -25,8 +25,8 @@
+   <property name="dist"  location="dist"/>
+   <property name="lib" location="lib" />
+ 
+-  <property name="javac.source" value="1.7" />
+-  <property name="javac.target" value="1.7" />
++  <property name="javac.source" value="1.8" />
++  <property name="javac.target" value="1.8" />
+ 
+   <property name="ivy.jar.version" value="2.5.0"/>
+   <property name="ivy.jar.name" value="ivy-${ivy.jar.version}.jar"/>
+@@ -131,7 +131,7 @@
+   </target>
+ 
+   <target name="generate-sources" depends="init">
+-    <ivy:cachepath organisation="org.mvel" module="mvel2" revision="2.3.2.Final"
++    <ivy:cachepath organisation="org.mvel" module="mvel2" revision="2.5.2.Final"
+       inline="true" conf="default" transitive="true" pathid="mvel.classpath"/>
+     <mkdir dir="${build}/java" />
+     <java
diff --git a/community/java-lz4/APKBUILD b/community/java-lz4/APKBUILD
index a53511344c8..bfa02b2cc3b 100644
--- a/community/java-lz4/APKBUILD
+++ b/community/java-lz4/APKBUILD
@@ -2,7 +2,7 @@
 # Maintainer: Jakub Jirutka <jakub@jirutka.cz>
 pkgname=java-lz4
 pkgver=1.8.0
-pkgrel=1
+pkgrel=2
 pkgdesc="LZ4 compression for Java"
 url="https://github.com/lz4/lz4-java"
 # aarch64, ppc64le: hangs during build
@@ -15,6 +15,7 @@ subpackages="$pkgname-native"
 source="https://github.com/lz4/lz4-java/archive/$pkgver/lz4-java-$pkgver.tar.gz
 	0001-ivy-location.patch
 	0002-dont-bundle-natives.patch
+	0003-openjdk21-compatibility.patch
 	"
 builddir="$srcdir/lz4-java-$pkgver"
 
@@ -43,4 +44,5 @@ sha512sums="
 ae78748d984d2ede18018d5e9ae6aee0d5fe6ac8b56d717f863968cfad6e9f85b62305692345ba16002bee68278e87a0364aa98aeb92e2af6dc169e5d5b612d4  lz4-java-1.8.0.tar.gz
 bd80cac3454db4cd95fab162d0031d4866cc7a9f9822f1231d5f9c766aa550398b9e27fad48c8150c0c8a538673ca3ad7de95edff9bd790d3351ba318ea44c49  0001-ivy-location.patch
 9d435cd35af15988d8844b38d7d00ad423062680323e9d5d395f431e736668ee10148bc3a0147a430cea522983a4ca54e57557d7330c42347bd71c2c9a06d622  0002-dont-bundle-natives.patch
+74d5a77fdbebcd9f92c44dd7053bfc76f6944b2702245c0ff3e2644babaa16a97cd5cdf7630882bd852f7cb636892f7d2e4cb61160d17ad617174ec1d0056b1c  0003-openjdk21-compatibility.patch
 "