diff --git a/gnu/packages/llvm.scm b/gnu/packages/llvm.scm
index 108a190c4b..9ffdf8761b 100644
--- a/gnu/packages/llvm.scm
+++ b/gnu/packages/llvm.scm
@@ -1668,7 +1668,7 @@ (define-public lldb
 (define-public libcxx
   (package
     (name "libcxx")
-    (version "14.0.6")
+    (version (package-version llvm-15))
     (source (llvm-monorepo version))
     (build-system cmake-build-system)
     (arguments