diff --git a/.github/workflows/ios_ci.yml b/.github/workflows/ios_ci.yml
--- a/.github/workflows/ios_ci.yml
+++ b/.github/workflows/ios_ci.yml
@@ -33,7 +33,7 @@
           KEYCHAIN_PATH=$RUNNER_TEMP/app-signing.keychain-db
 
           # import certificate from secrets
-          echo -n "$BUILD_CERTIFICATE_BASE64" | base64 --decode --output $CERTIFICATE_PATH
+          echo -n "$BUILD_CERTIFICATE_BASE64" | base64 --decode -o $CERTIFICATE_PATH
 
           # create temporary keychain
           security create-keychain -p "$KEYCHAIN_PASSWORD" $KEYCHAIN_PATH
diff --git a/.github/workflows/ios_release.yml b/.github/workflows/ios_release.yml
--- a/.github/workflows/ios_release.yml
+++ b/.github/workflows/ios_release.yml
@@ -28,7 +28,7 @@
           KEYCHAIN_PATH=$RUNNER_TEMP/app-signing.keychain-db
 
           # import certificate from secrets
-          echo -n "$BUILD_CERTIFICATE_BASE64" | base64 --decode --output $CERTIFICATE_PATH
+          echo -n "$BUILD_CERTIFICATE_BASE64" | base64 --decode -o $CERTIFICATE_PATH
 
           # create temporary keychain
           security create-keychain -p "$KEYCHAIN_PASSWORD" $KEYCHAIN_PATH