diff --git a/commitizen/cz/conventional_commits/conventional_commits.py b/commitizen/cz/conventional_commits/conventional_commits.py
index fcf0df4b58..c656092e67 100644
--- a/commitizen/cz/conventional_commits/conventional_commits.py
+++ b/commitizen/cz/conventional_commits/conventional_commits.py
@@ -172,7 +172,7 @@ def schema(self) -> str:
 
     def schema_pattern(self) -> str:
         PATTERN = (
-            r"(build|ci|docs|feat|fix|perf|refactor|style|test|chore|revert|bump)"
+            r"(build|ci|docs|feat|fix|perf|refactor|style|test|chore|revert|bump|improvement)"
             r"(\(\S+\))?:\s.*"
         )
         return PATTERN
diff --git a/tests/commands/test_check_command.py b/tests/commands/test_check_command.py
index e5fe53b518..ab15e9ff13 100644
--- a/tests/commands/test_check_command.py
+++ b/tests/commands/test_check_command.py
@@ -31,6 +31,7 @@
     ),
     "docs(check): pin pre-commit to v1.16.2",
     "docs(check): fix pre-commit setup",
+    "improvement(defaults): better parsing logic",
     "bump: version 1.16.1 → 1.16.2",
     "Merge pull request #135 from Lee-W/fix-pre-commit-hook\nFix pre commit hook",
     "docs(check): enforce cz check only whem committing",