diff --git a/Dockerfile.base b/Dockerfile.base
index d60d62e..52a7670 100644
--- a/Dockerfile.base
+++ b/Dockerfile.base
@@ -1,5 +1,5 @@
 FROM ubuntu:22.04
-RUN apt-get install gnupg
+RUN apt-get install gnupg1
 RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 871920D1991BC93C
 # RUN curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
 RUN apt-get update