diff --git a/docker-compose.yml b/docker-compose.yml
index 73b9a73..5dfcb74 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -155,6 +155,10 @@ services:
     volumes:
       - ./files/st2.docker.conf:/etc/st2/st2.docker.conf:ro
       - ./files/st2.user.conf:/etc/st2/st2.user.conf:ro
+      # Rule engine runner needs access to keys since workflow action definitions (Jinja
+      # templates) can reference secrets. Using core.st2.IntervalTimer caused Error:
+      # "Failed to render parameter \"passwords\": [Errno 2] No such file or directory: '/etc/st2/keys/datastore_key.json'"
+      - stackstorm-keys:/etc/st2/keys:ro
   st2sensorcontainer:
     image: ${ST2_IMAGE_REPO:-stackstorm/}st2sensorcontainer:${ST2_VERSION:-latest}
     restart: on-failure