diff --git a/requirements-constraints.txt b/requirements-constraints.txt
index 51fff61..1c556cf 100644
--- a/requirements-constraints.txt
+++ b/requirements-constraints.txt
@@ -139,9 +139,9 @@ toml==0.10.0 \
     --hash=sha256:f1db651f9657708513243e61e6cc67d101a39bad662eaa9b5546f789338e07a3 \
     --hash=sha256:235682dd292d5899d361a811df37e04a8828a5b1da3115886b73cf81ebc9100e \
     --hash=sha256:229f81c57791a41d65e399fc06bf0848bab550a9dfd5ed66df18ce5f05e73d5c
-attrs==19.1.0 \
-    --hash=sha256:69c0dbf2ed392de1cb5ec704444b08a5ef81680a61cb899dc08127123af36a79 \
-    --hash=sha256:f0b870f674851ecbfbbbd364d6b5cbdff9dcedbc7f3f5e18a6891057f21fe399
+attrs==19.3.0 \
+    --hash=sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c \
+    --hash=sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72
 pyflakes==2.1.1 \
     --hash=sha256:17dbeb2e3f4d772725c777fabc446d5634d1038f234e77343108ce445ea69ce0 \
     --hash=sha256:d976835886f8c5b31d47970ed689944a0262b5f3afa00a5a7b4dc81e5449f8a2