diff --git a/Pipfile.lock b/Pipfile.lock
index b3c0525..5ff5e2c 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -75,11 +75,10 @@
         },
         "attrs": {
             "hashes": [
-                "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c",
-                "sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72"
+                "sha256:149e90d6d8ac20db7a955ad60cf0e6881a3f20d37096140088356da6c716b0b1",
+                "sha256:ef6aaac3ca6cd92904cdd0d83f629a15f18053ec84e6432106f7a4d04ae4f5fb"
             ],
-            "index": "pypi",
-            "version": "==19.3.0"
+            "version": "==21.2.0"
         },
         "colorama": {
             "hashes": [
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 39f24f0..c05b518 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -7,7 +7,7 @@ pyflakes==2.1.1
 py==1.8.0
 more-itertools==8.0.2
 six==1.13.0
-attrs==19.3.0
+attrs==21.2.0
 pluggy==0.13.1
 pytest==5.3.2
 #Coverage