diff --git a/Dockerfile b/Dockerfile
index 6d30673..44b3626 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,3 +11,6 @@ COPY "run.sh" "/"
 
 ENTRYPOINT [ "/sbin/tini", "--" ]
 CMD [ "/run.sh" ]
+
+HEALTHCHECK --interval="10s" \
+    CMD pgrep crond || exit 1