diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -2,6 +2,10 @@
 
 `wai-middleware-delegate` uses [PVP Versioning][1].
 
+## 0.1.2.4 -- 2021-09-30
+
+* Fix cabal reference to data files
+
 ## 0.1.2.3 -- 2021-09-30
 
 * Add missing data files needed by the tests
diff --git a/wai-middleware-delegate.cabal b/wai-middleware-delegate.cabal
--- a/wai-middleware-delegate.cabal
+++ b/wai-middleware-delegate.cabal
@@ -1,6 +1,6 @@
 cabal-version:      3.0
 name:               wai-middleware-delegate
-version:            0.1.2.3
+version:            0.1.2.4
 synopsis:           WAI middleware that delegates handling of requests.
 description:
   [WAI](http://hackage.haskell.org/package/wai) middleware that intercepts requests
@@ -22,6 +22,7 @@
 build-type:         Simple
 extra-source-files:
   ChangeLog.md
+data-files:
   test/*.csr
   test/*.pem