diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 7bbb742987d..8f6ec71e5a4 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -140,6 +140,15 @@ jobs:
               TESTS="t/modules/dav.t"
             pkgs: litmus
           # -------------------------------------------------------------------------
+          - name: litmus WebDAV tests, APR trunk, LMDB
+            config: --enable-dav --enable-dav-fs
+            pkgs: litmus liblmdb-dev
+            env: |
+              APR_VERSION=trunk
+              APR_CONFIG="--with-lmdb --with-dbm=lmdb"
+              LITMUS=1
+              TESTS="t/modules/dav.t"
+          # -------------------------------------------------------------------------
           # MFLAGS= works around https://bz.apache.org/bugzilla/show_bug.cgi?id=63942
           ## TODO if: *condition_not_24x
           - name: Regenerate ap_expr