diff --git a/base/packages/openhab2.sls b/base/packages/openhab2.sls
index 1abd542..c2343b9 100644
--- a/base/packages/openhab2.sls
+++ b/base/packages/openhab2.sls
@@ -29,6 +29,7 @@ openhab-prometheus-exporter:
   file.managed:
      - name: /usr/local/bin/openhab2-prometheus-exporter
      - source: https://raw.githubusercontent.com/zoide/openhab2-prometheus-exporter/master/openhab2-exporter.py
+     - source_hash: eea41af67a92266680a427ccde87344753bd8bbbcee20d9eb1d2ed3773e5676f
      - user: openhab
      - group: openhab
      - mode: 0755