diff --git a/easystacks/software.eessi.io/2023.06/a64fx/eessi-2023.06-eb-4.9.4-2023a.yml b/easystacks/software.eessi.io/2023.06/a64fx/eessi-2023.06-eb-4.9.4-2023a.yml
new file mode 100644
index 0000000000..55ecb2a3a9
--- /dev/null
+++ b/easystacks/software.eessi.io/2023.06/a64fx/eessi-2023.06-eb-4.9.4-2023a.yml
@@ -0,0 +1,5 @@
+easyconfigs:
+  - waLBerla-6.1-foss-2023a.eb:
+      options:
+        # see https://github.com/easybuilders/easybuild-easyconfigs/pull/21600
+        from-commit: 9b12318bcff1749781d9eb71c23e21bc3a79ed01