diff --git a/.github/workflows/linux-upstream-zlib.yml b/.github/workflows/linux-upstream-zlib.yml
index 74e5b0e..7c6fa8a 100644
--- a/.github/workflows/linux-upstream-zlib.yml
+++ b/.github/workflows/linux-upstream-zlib.yml
@@ -20,6 +20,7 @@ jobs:
         perl:
           - '5.38'
         zlib-version:
+          - v1.3.1
           - v1.3
           - v1.2.13
           - v1.2.12
diff --git a/.github/workflows/macos-upstream-zlib.yml b/.github/workflows/macos-upstream-zlib.yml
index b9f5282..fcef6b5 100644
--- a/.github/workflows/macos-upstream-zlib.yml
+++ b/.github/workflows/macos-upstream-zlib.yml
@@ -20,6 +20,7 @@ jobs:
         perl:
           - '5.38'
         zlib-version:
+          - v1.3.1
           - v1.3
           - v1.2.13
           - v1.2.12