diff --git a/image/Dockerfile b/image/Dockerfile
index 1d21373..d6c0406 100644
--- a/image/Dockerfile
+++ b/image/Dockerfile
@@ -7,6 +7,7 @@ MAINTAINER Phusion <info@phusion.nl>
 ADD . /pd_build
 
 ARG ARCH
+ARG http_proxy
 RUN --mount=type=cache,target=/build_cache \
     /usr/bin/nice /pd_build/install_image.sh
 
diff --git a/image/Dockerfile.base b/image/Dockerfile.base
index 298ba50..e9dff1d 100644
--- a/image/Dockerfile.base
+++ b/image/Dockerfile.base
@@ -5,6 +5,7 @@ MAINTAINER Phusion <info@phusion.nl>
 ADD . /pd_build
 
 ARG ARCH
+ARG http_proxy
 RUN --mount=type=cache,target=/build_cache \
     rm -rf "/build_cache/${ARCH}" && \
     /usr/bin/nice /pd_build/install_base.sh && \