diff --git a/requirements.txt b/requirements.txt
index dd982363..83cc77f0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ requests[security]>=2.18
 pysocks>=1.7.1
 
 # Import Export and Utils implementation
-ruamel.yaml>=0.16.3,<0.18; python_version < '3'
+ruamel.yaml==0.18.6; python_version < '3'
 ruamel.yaml>=0.16.3; python_version >= '3'
 
 # xml to json parsing