diff --git a/docker/cadc-postgresql-dev/Dockerfile.pg12 b/docker/cadc-postgresql-dev/Dockerfile.pg12
index 473e85e..543f6ca 100644
--- a/docker/cadc-postgresql-dev/Dockerfile.pg12
+++ b/docker/cadc-postgresql-dev/Dockerfile.pg12
@@ -8,7 +8,6 @@ ARG PGSPHERE=https://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/software/pgsphere12-1.
 RUN yum -y install centos-release-scl epel-release ${PGDG} \
     && rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 \
     && rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-SCLo \
-    && rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-PGDG \
     && rpm -q gpg-pubkey --qf '%{NAME}-%{VERSION}-%{RELEASE}\t%{SUMMARY}\n'
     
 # packages