diff --git a/requirements.txt b/requirements.txt
index 6ec2e80e7033b2c3f10c83526a6b556245a90fac..5e3248cae3b35153a6d1aa3eca2725add2d75b69 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,4 +12,5 @@ scipy==1.3.0
 six==1.12.0
 pandas==0.23.3
 m2r==0.2.1
-docutils==0.12
\ No newline at end of file
+docutils==0.12
+yaml==3.12
\ No newline at end of file