diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index ccfdc4b..193b00e 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,5 +1,5 @@
 -   repo: https://github.com/pre-commit/pre-commit-hooks
-    sha: v0.7.0
+    sha: 4c3cc8f3edc3c673b3a4abe2054e64f21d26772c
     hooks:
     -   id: trailing-whitespace
     -   id: end-of-file-fixer
diff --git a/pre_commit_hooks/pretty_format_json.py b/pre_commit_hooks/pretty_format_json.py
index c1ee59d..76b8cfb 100644
--- a/pre_commit_hooks/pretty_format_json.py
+++ b/pre_commit_hooks/pretty_format_json.py
@@ -23,8 +23,8 @@
             object_pairs_hook=pairs_first,
         ),
         indent=indent,
-        ensure_ascii=ensure_ascii
-    )) + "\n"  # dumps don't end with a newline
+        ensure_ascii=ensure_ascii,
+    )) + "\n"  # dumps does not end with a newline
 
 
 def _autofix(filename, new_contents, encoding=None):
@@ -106,7 +106,7 @@
         try:
             pretty_contents = _get_pretty_format(
                 contents, args.indent, ensure_ascii=not args.no_ensure_ascii,
-                sort_keys=not args.no_sort_keys, top_keys=args.top_keys
+                sort_keys=not args.no_sort_keys, top_keys=args.top_keys,
             )
 
             if contents != pretty_contents:
@@ -115,7 +115,7 @@
                 if args.autofix:
                     _autofix(
                         json_file, pretty_contents,
-                        encoding='utf-8' if args.no_ensure_ascii else None
+                        encoding='utf-8' if args.no_ensure_ascii else None,
                     )
 
                 status = 1