diff --git a/plays/filter_plugins/filters.py b/plays/filter_plugins/filters.py
index 2b6fe46..46c4960 100644
--- a/plays/filter_plugins/filters.py
+++ b/plays/filter_plugins/filters.py
@@ -8,7 +8,10 @@ class FilterModule(object):
 
     def filters(self):
         """Filters list."""
-        return {"update_env": self.filter_update_env}
+        return {
+            "update_env": self.filter_update_env,
+            "update_vars": self.filter_update_vars,
+        }
 
     def filter_update_env(self, config, new_env):
         """Update the config.env dictionary with new keys."""
@@ -19,3 +22,13 @@ class FilterModule(object):
             config["env"][key] = val
 
         return config
+
+    def filter_update_vars(self, config, new_vars):
+        """Update the config.vars dictionary with new keys."""
+        if "vars" not in config:
+            return config
+
+        for key, val in new_vars.items():
+            config["vars"][key] = val
+
+        return config