diff --git a/.woodpecker.yml b/.woodpecker.yml
index e403562..4300762 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -3,6 +3,7 @@ pipeline:
     image: gradle:latest
     pull: true
     commands:
+      - apt update
       - apt install -y graphviz
       - gradle publish javadoc -Pmaven="https://maven.frohnmeyer-wds.de/artifacts"
       - mkdir javadoc