diff --git a/build-alpine.jenkins b/build-alpine.jenkins
index 7a4627c..b0ee3f6 100644
--- a/build-alpine.jenkins
+++ b/build-alpine.jenkins
@@ -22,7 +22,8 @@ COPY test-chamber-13.lan.root.crt /usr/local/share/ca-certificates/test-chamber-
 
 RUN apk add --no-cache --virtual=.packagecache ca-certificates && \\
     update-ca-certificates --fresh && \\
-    apk del .packagecache
+    apk del .packagecache && \\
+    sed -i 's/dl-cdn.alpinelinux.org/nexus.c.test-chamber-13.lan\\/repository/g' /etc/apk/repositories
 """
 
 def label = "kubernetes-${UUID.randomUUID().toString()}"