diff --git a/dev_requirements.txt b/dev_requirements.txt
index 82ee63a..d6149f6 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -1,4 +1,6 @@
 mock
 pyflakes==2.1.1
-pylint==1.9.4
+# DocStringChecker currently only works with pylint 1.6.5. Upgrading causes it
+# to stop producing errors on bad docstrings.
+pylint==1.6.5
 yapf==0.27.0