diff --git a/tests/requirements.txt b/tests/requirements.txt
index 48f5b6a..3e75395 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,4 +1,3 @@
-attrs==19.1.0
 black==19.3b0
 coverage==4.5.4
 Cython==0.29.13;sys_platform!='win32'