diff --git a/test-requirements.txt b/test-requirements.txt
index c18b0df..40db5c9 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,9 +2,9 @@ astroid==2.4.2 \
     --hash=sha256:2f4078c2a41bf377eea06d71c9d2ba4eb8f6b1af2135bec27bbbb7d8f12bb703 \
     --hash=sha256:bc58d83eb610252fd8de6363e39d4f1d0619c894b0ed24603b881c02e64c7386 \
     # via -r ./test-requirements.txt
-attrs==19.3.0 \
-    --hash=sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c \
-    --hash=sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72 \
+attrs==20.3.0 \
+    --hash=sha256:31b2eced602aa8423c2aea9c76a724617ed67cf9513173fd3a4f03e3a929c7e6 \
+    --hash=sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700 \
     # via -r ./test-requirements.txt, jsonschema, pytest
 coverage==5.1 \
     --hash=sha256:00f1d23f4336efc3b311ed0d807feb45098fc86dee1ca13b3d6768cdab187c8a \