diff --git a/Pipfile.lock b/Pipfile.lock
index a6b6ebe..204308c 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -136,11 +136,10 @@
         },
         "flake8": {
             "hashes": [
-                "sha256:749dbbd6bfd0cf1318af27bf97a14e28e5ff548ef8e5b1566ccfb25a11e7c839",
-                "sha256:aadae8761ec651813c24be05c6f7b4680857ef6afaae4651a4eccaef97ce6c3b"
+                "sha256:124554bfd067e04d891258c0208a764b512ca3a94c8a3c06bea56af539dd74db",
+                "sha256:b52d27e627676b015340c3b1c72bc9259a6cacc9341712fb8f01ddfaaa2c651a"
             ],
-            "index": "pypi",
-            "version": "==3.8.4"
+            "version": "==4.0.0"
         },
         "idna": {
             "hashes": [