diff --git a/src/com/mirantis/mk/Python.groovy b/src/com/mirantis/mk/Python.groovy
index 9d07d47..9c9bf88 100644
--- a/src/com/mirantis/mk/Python.groovy
+++ b/src/com/mirantis/mk/Python.groovy
@@ -159,7 +159,7 @@
  */
 def setupDocutilsVirtualenv(path, python="python2") {
     requirements = [
-        'docutils',
+        'docutils==0.16',
     ]
     setupVirtualenv(path, python, requirements)
 }
@@ -453,8 +453,8 @@
  */
 def setupJinjaVirtualenv(path) {
     requirements = [
-        'jinja2-cli',
-        'pyyaml',
+        'jinja2-cli==0.7.0',
+        'pyyaml==5.3',
     ]
     setupVirtualenv(path, 'python2', requirements)
 }