diff --git a/gnu/local.mk b/gnu/local.mk
index e05f687467..b059689954 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -1696,6 +1696,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/openjdk-10-pointer-comparison.patch      \
   %D%/packages/patches/openjdk-10-setsignalhandler.patch        \
   %D%/packages/patches/openjdk-15-xcursor-no-dynamic.patch	\
+  %D%/packages/patches/openjdk-21-fix-rpath.patch		\
   %D%/packages/patches/openmpi-mtl-priorities.patch		\
   %D%/packages/patches/openmw-assume-nonconst-SIGSTKSZ.patch    \
   %D%/packages/patches/openssh-trust-guix-store-directory.patch	\
diff --git a/gnu/packages/java.scm b/gnu/packages/java.scm
index a87c688749..0307b09acf 100644
--- a/gnu/packages/java.scm
+++ b/gnu/packages/java.scm
@@ -1550,6 +1550,23 @@ (define-public openjdk20
   (make-openjdk openjdk19 "20"
                 "0pk5lpwijfv9qv7vwpsq2xfklbnqdfs6xbdhc5aamrpar4xi4ykx"))
 
+(define-public openjdk21
+  (make-openjdk openjdk20 "21"
+                "06wjfwrkqykjdkis2s1nh91cy8vwincnmc699cxvyk3fc12jf3vw"
+   (source (origin
+             (inherit (package-source base))
+             (patches (search-patches "openjdk-21-fix-rpath.patch"
+                                      "openjdk-15-xcursor-no-dynamic.patch"))))
+   (arguments
+    (substitute-keyword-arguments (package-arguments base)
+      ((#:phases phases)
+       #~(modify-phases #$phases
+           (replace 'fix-java-shebangs
+             (lambda _
+               ;; 'blacklisted' was renamed back to 'blocked'.
+               (substitute* "src/java.base/share/data/blockedcertsconverter/blocked.certs.pem"
+                 (("^#!.*") "#! java BlockedCertsConverter SHA-256\n"))))))))))
+
 ;;; Convenience alias to point to the latest version of OpenJDK.
 (define-public openjdk openjdk19)
 
diff --git a/gnu/packages/patches/openjdk-21-fix-rpath.patch b/gnu/packages/patches/openjdk-21-fix-rpath.patch
new file mode 100644
index 0000000000..62e2a50a52
--- /dev/null
+++ b/gnu/packages/patches/openjdk-21-fix-rpath.patch
@@ -0,0 +1,16 @@
+Author: Danny Milosavljevic <dannym@scratchpost.org>
+Date: 2023-09-20
+
+diff -ru openjdk-21/make/modules/jdk.internal.le/Lib.gmk.orig openjdk-21.drv-4/source/make/modules/jdk.internal.le/Lib.gmk
+--- openjdk-21/make/modules/jdk.internal.le/Lib.gmk.orig	1970-01-01 01:00:01.000000000 +0100
++++ openjdk-21/make/modules/jdk.internal.le/Lib.gmk	2023-09-20 21:42:04.626821839 +0200
+@@ -34,7 +34,8 @@
+       TOOLCHAIN := TOOLCHAIN_LINK_CXX, \
+       OPTIMIZATION := LOW, \
+       CFLAGS := $(CXXFLAGS_JDKLIB), \
+-      LDFLAGS := $(LDFLAGS_JDKLIB), \
++      LDFLAGS := $(LDFLAGS_JDKLIB) \
++        $(call SET_SHARED_LIBRARY_ORIGIN), \
+       LIBS_unix := $(JDKLIB_LIBS) $(LIBCXX), \
+       LIBS_windows := $(JDKLIB_LIBS) user32.lib, \
+   ))