diff --git a/Dockerfile b/Dockerfile
index c4eda79..1287af4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,6 +19,6 @@ RUN \
     mkdir -p $GNUPGHOME && \
     chmod go-rwx $GNUPGHOME && \
     gpg --import /usr/share/keyrings/ubuntu-archive-keyring.gpg && \
-    gpg --import /usr/share/keyrings/ubuntu-master-keyring.gpg
+    cp $GNUPGHOME/pubring.gpg $GNUPGHOME/trustedkeys.gpg
 
 EXPOSE 80