diff --git a/Dockerfile.gpu b/Dockerfile.gpu
index 7ee4436ecf9b6c4334aa14b024cfb5e387a27da9..dd53ec03b0308c35b1ab7991a91d339ed5252818 100644
--- a/Dockerfile.gpu
+++ b/Dockerfile.gpu
@@ -1,7 +1,7 @@
 FROM nvidia/cuda:11.7.0-base-ubuntu22.04
 
-RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys A4B469963BF863CC
-RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 871920D1991BC93C
+RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys A4B469963BF863CC
+RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 871920D1991BC93C
 RUN apt-get update -y && apt-get install -y gcc python3-dev python3-venv python3-pip
 
 COPY requirements.txt requirements.txt