diff --git a/.github/release/partial_release.py b/.github/release/partial_release.py
index 8901696dd008..3800a164ac9c 100644
--- a/.github/release/partial_release.py
+++ b/.github/release/partial_release.py
@@ -36,7 +36,7 @@ def main(ctx):
 
 @main.command()
 @click.option(
-    "--artifact_ids",
+    "--artifact-ids",
     required=True,
     type=str,
     help="""
diff --git a/.github/release/release_unit_tests.py b/.github/release/release_unit_tests.py
index acbb50bed2cd..e46192a6c2dd 100644
--- a/.github/release/release_unit_tests.py
+++ b/.github/release/release_unit_tests.py
@@ -19,7 +19,7 @@ def test_bump_single_version_success(self):
             runner.invoke(
                 bump_released_version,
                 [
-                    "--artifact_ids=google-cloud-asset",
+                    "--artifact-ids=google-cloud-asset",
                     "--versions=versions-asset.txt",
                 ],
             )
@@ -35,7 +35,7 @@ def test_bump_multiple_versions_success(self):
             runner.invoke(
                 bump_released_version,
                 [
-                    "--artifact_ids=google-cloud-bigqueryconnection,google-cloud-java",
+                    "--artifact-ids=google-cloud-bigqueryconnection,google-cloud-java",
                     "--versions=versions-multiple.txt",
                 ],
             )