diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9faaf25d..0ff7a270 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -77,6 +77,7 @@ jobs:
           path: "htmlcov"
       
       - name: "Make badge"
+        if: github.ref == 'refs/heads/main'
         uses: "schneegans/dynamic-badges-action@v1.4.0"
         with:
           # GIST_TOKEN is a GitHub personal access token with scope "gist".
diff --git a/HISTORY.md b/HISTORY.md
index e0baf91c..4e9d5770 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -12,6 +12,8 @@
 - Improve the implementation of `cattrs._compat.is_typeddict`. The implementation is now simpler, and relies on fewer private implementation details from `typing` and typing_extensions.
   ([#384](https://github.com/python-attrs/cattrs/pull/384))
 - Improve handling of TypedDicts with forward references.
+- Speed up generated _attrs_ and TypedDict structuring functions by changing their signature slightly.
+  ([#388](https://github.com/python-attrs/cattrs/pull/388))
 
 ## 23.1.2 (2023-06-02)
 
@@ -19,7 +21,8 @@
 
 ## 23.1.1 (2023-05-30)
 
-- Add `typing_extensions` as a direct dependency on 3.10. ([#369](https://github.com/python-attrs/cattrs/issues/369) [#370](https://github.com/python-attrs/cattrs/pull/370))
+- Add `typing_extensions` as a direct dependency on 3.10.
+  ([#369](https://github.com/python-attrs/cattrs/issues/369) [#370](https://github.com/python-attrs/cattrs/pull/370))
 
 ## 23.1.0 (2023-05-30)
 
diff --git a/src/cattrs/gen/__init__.py b/src/cattrs/gen/__init__.py
index 279934b0..8e3dc29d 100644
--- a/src/cattrs/gen/__init__.py
+++ b/src/cattrs/gen/__init__.py
@@ -470,7 +470,7 @@ def make_dict_structure_fn(
         globs[k] = v
 
     total_lines = [
-        f"def {fn_name}(o, _, *, {internal_arg_line}):",
+        f"def {fn_name}(o, _, {internal_arg_line}):",
         *lines,
         *post_lines,
         *instantiation_lines,
diff --git a/src/cattrs/gen/typeddicts.py b/src/cattrs/gen/typeddicts.py
index 6b794397..cbbc4bdc 100644
--- a/src/cattrs/gen/typeddicts.py
+++ b/src/cattrs/gen/typeddicts.py
@@ -504,7 +504,7 @@ def make_dict_structure_fn(
         globs[k] = v
 
     total_lines = [
-        f"def {fn_name}(o, _, *, {internal_arg_line}):",
+        f"def {fn_name}(o, _, {internal_arg_line}):",
         *lines,
         *post_lines,
         "  return res",