diff --git a/requirements/dev.txt b/requirements/dev.txt
index 29be6883..0f515653 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -5,7 +5,7 @@ hg+https://nicfit@bitbucket.org/nicfit/sphinxcontrib-bitbucket
 ipdb==0.11
 nicfit.py[cookiecutter]==0.8.3
 pss==1.42
-pyaml==18.11.0
+pyaml==19.4.1
 sphinx-issues==1.2.0
 sphinx_rtd_theme==0.4.3
 tox==3.14.0