diff --git a/rules_haskell_tests/MODULE.bazel b/rules_haskell_tests/MODULE.bazel
index 1c027d932..50b978a4c 100644
--- a/rules_haskell_tests/MODULE.bazel
+++ b/rules_haskell_tests/MODULE.bazel
@@ -86,7 +86,7 @@ bazel_dep(
 )
 bazel_dep(
     name = "zlib",
-    version = "1.3.1.bcr.5",
+    version = "1.3.1.bcr.6",
 )
 bazel_dep(
     name = "rules_bazel_integration_test",