2 files changed, 2 insertions, 2 deletions
diff --git a/Pipfile b/Pipfile
index 5baa620..fd4da7b 100644
--- a/Pipfile
+++ b/Pipfile
@@ -7,7 +7,7 @@ name = "pypi"
 
 [dev-packages]
 pytest = "*"
-black = "*"
+black = "==21.12b0"
 twine = "*"
 
 [scripts]
diff --git a/Pipfile.lock b/Pipfile.lock
index 4cfea0d..4dd88d0 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "77a611c58e4ab7b45facd016e8a2e7dc3ea3afdb8490bf54a7bfc5d34d580403"
+            "sha256": "d9a44a877af0991acf5ce5208b789a2b4478829991bcf40ffe519e0b996f54bf"
         },
         "pipfile-spec": 6,
         "requires": {},