diff --git a/.github/workflows/haskell.yml b/.github/workflows/haskell.yml
index 5e4b169..77dae1b 100644
--- a/.github/workflows/haskell.yml
+++ b/.github/workflows/haskell.yml
@@ -77,7 +77,7 @@ jobs:
       run: |
         set -ex
         curl -sSL https://get.haskellstack.org/ | sh -s - -f
-        curl -sSL https://gist.githubusercontent.com/lehins/fd36a8cc8bf853173437b17f6b6426ad/raw/4702d0252731ad8b21317375e917124c590819ce/git-modtime.hs -o git-modtime.hs
+        curl -sSL https://raw.githubusercontent.com/lehins/utils/da8cdd9962de92c7335fb9d201cd0b6186638ca1/haskell/git-modtime/git-modtime.hs -o git-modtime.hs
         [ -n "${{ matrix.ghc }}" ] && [ "${{ matrix.os }}" == "ubuntu-latest" ] && STACK_ARGS="$STACK_ARGS --system-ghc"
         [ -n "${{ matrix.stack-yaml }}" ] && STACK_YAML=${{ matrix.stack-yaml }}
         stack $STACK_ARGS runghc git-modtime.hs