diff --git a/action.yml b/action.yml
index 23c6000..8f19f1f 100644
--- a/action.yml
+++ b/action.yml
@@ -67,7 +67,11 @@ runs:
     - run: |
         : install rustup if needed
         if ! command -v rustup &>/dev/null; then
-          curl --proto '=https' --tlsv1.2 --retry 10 --retry-connrefused --location --silent --show-error --fail "https://sh.rustup.rs" | sh -s -- --default-toolchain none -y
+          if curl --help curl | grep --quiet retry-connrefused; then
+            curl --proto '=https' --tlsv1.2 --retry 10 --retry-connrefused --location --silent --show-error --fail "https://sh.rustup.rs" | sh -s -- --default-toolchain none -y
+          else
+            curl --proto '=https' --tlsv1.2 --retry 10 --location --silent --show-error --fail "https://sh.rustup.rs" | sh -s -- --default-toolchain none -y
+          fi
           echo "$CARGO_HOME/bin" >> $GITHUB_PATH
         fi
       if: runner.os != 'Windows'