diff --git a/.github/workflows/GnuTests.yml b/.github/workflows/GnuTests.yml
index eb3e22a80..ccb5a6f74 100644
--- a/.github/workflows/GnuTests.yml
+++ b/.github/workflows/GnuTests.yml
@@ -42,7 +42,7 @@ jobs:
         outputs path_GNU path_GNU_tests path_reference path_UUTILS
         #
         repo_default_branch="${{ github.event.repository.default_branch }}"
-        repo_GNU_ref="v9.3"
+        repo_GNU_ref="v9.4"
         repo_reference_branch="${{ github.event.repository.default_branch }}"
         outputs repo_default_branch repo_GNU_ref repo_reference_branch
         #
@@ -315,7 +315,7 @@ jobs:
       with:
         repository: 'coreutils/coreutils'
         path: 'gnu'
-        ref: 'v9.3'
+        ref: 'v9.4'
         submodules: recursive
     - uses: dtolnay/rust-toolchain@master
       with: