diff --git a/Pipfile.lock b/Pipfile.lock
index f568532..b23c63b 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -102,11 +102,10 @@
         },
         "flake8": {
             "hashes": [
-                "sha256:15e351d19611c887e482fb960eae4d44845013cc142d42896e9862f775d8cf5c",
-                "sha256:f04b9fcbac03b0a3e58c0ab3a0ecc462e023a9faf046d57794184028123aa208"
+                "sha256:124554bfd067e04d891258c0208a764b512ca3a94c8a3c06bea56af539dd74db",
+                "sha256:b52d27e627676b015340c3b1c72bc9259a6cacc9341712fb8f01ddfaaa2c651a"
             ],
-            "index": "pypi",
-            "version": "==3.8.3"
+            "version": "==4.0.0"
         },
         "mccabe": {
             "hashes": [