diff --git a/Dockerfile b/Dockerfile
index 2046c5b..612959a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.15.13-buster@sha256:1482d5ed2123ef7995d7b0cf7c5f3f2dbfdff96ae0a11286a70c25939c3903ca as build
+FROM golang:1.15.13-buster@sha256:22d548f664118349d2fcc7a31dfa7b9a2b20efab8aeac0e0f78ba91ca12b9b74 as build
 
 # renovate: datasource=github-tags depName=strukturag/nextcloud-spreed-signaling versioning=semver
 ENV SPREED_SIGNALING_VERSION v0.2.0