diff --git a/lib/ansible/runner/filter_plugins/core.py b/lib/ansible/runner/filter_plugins/core.py
index 443d1574ca..6d2e9f3017 100644
--- a/lib/ansible/runner/filter_plugins/core.py
+++ b/lib/ansible/runner/filter_plugins/core.py
@@ -226,6 +226,7 @@ class FilterModule(object):
             'dirname': os.path.dirname,
             'expanduser': os.path.expanduser,
             'realpath': os.path.realpath,
+            'relpath': os.path.relpath,
 
             # failure testing
             'failed'  : failed,