diff --git a/Pipfile.lock b/Pipfile.lock
index e3b1bdd4d..7af236405 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -63,10 +63,10 @@
         },
         "attrs": {
             "hashes": [
-                "sha256:69c0dbf2ed392de1cb5ec704444b08a5ef81680a61cb899dc08127123af36a79",
-                "sha256:f0b870f674851ecbfbbbd364d6b5cbdff9dcedbc7f3f5e18a6891057f21fe399"
+                "sha256:2d27e3784d7a565d36ab851fe94887c5eccd6a463168875832a1be79c82828b4",
+                "sha256:626ba8234211db98e869df76230a137c4c40a12d72445c45d5f5b716f076e2fd"
             ],
-            "version": "==19.1.0"
+            "version": "==21.4.0"
         },
         "coverage": {
             "hashes": [
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 586676d5e..e8e4a1182 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -7,7 +7,7 @@ pyflakes==2.4.0
 py==1.8.2
 atomicwrites==1.0
 pluggy<2.0,==0.12
-attrs==19.2.0
+attrs==21.4.0
 pyparsing!=3.0.5,==2.0.2
 pytest==6.2.5
 -r requirements.txt