diff --git a/requirements-dev.txt b/requirements-dev.txt
index 13e759d..bc7d5ad 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
 docutils
 pep8
-Pygments==1.6
-coverage==5.2.1
+Pygments
+coverage