diff --git a/10/buster/Dockerfile b/10/buster/Dockerfile
index 795143f4c5..965fdce2c9 100644
--- a/10/buster/Dockerfile
+++ b/10/buster/Dockerfile
@@ -81,7 +81,7 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	gpg --batch --keyserver keyserver.ubuntu.com --recv-keys "$key"; \
 	gpg --batch --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	command -v gpgconf > /dev/null && gpgconf --kill all; \
 	rm -rf "$GNUPGHOME"; \
diff --git a/10/stretch/Dockerfile b/10/stretch/Dockerfile
index 2b7eb9ca11..d757fc951c 100644
--- a/10/stretch/Dockerfile
+++ b/10/stretch/Dockerfile
@@ -81,7 +81,7 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	gpg --batch --keyserver keyserver.ubuntu.com --recv-keys "$key"; \
 	gpg --batch --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	command -v gpgconf > /dev/null && gpgconf --kill all; \
 	rm -rf "$GNUPGHOME"; \
diff --git a/11/buster/Dockerfile b/11/buster/Dockerfile
index 527456c266..5c8dd5ebef 100644
--- a/11/buster/Dockerfile
+++ b/11/buster/Dockerfile
@@ -81,7 +81,7 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	gpg --batch --keyserver keyserver.ubuntu.com --recv-keys "$key"; \
 	gpg --batch --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	command -v gpgconf > /dev/null && gpgconf --kill all; \
 	rm -rf "$GNUPGHOME"; \
diff --git a/11/stretch/Dockerfile b/11/stretch/Dockerfile
index a3f46109c1..da1b9e5f5b 100644
--- a/11/stretch/Dockerfile
+++ b/11/stretch/Dockerfile
@@ -81,7 +81,7 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	gpg --batch --keyserver keyserver.ubuntu.com --recv-keys "$key"; \
 	gpg --batch --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	command -v gpgconf > /dev/null && gpgconf --kill all; \
 	rm -rf "$GNUPGHOME"; \
diff --git a/12/buster/Dockerfile b/12/buster/Dockerfile
index 6dafa8a094..bebaf22af0 100644
--- a/12/buster/Dockerfile
+++ b/12/buster/Dockerfile
@@ -81,7 +81,7 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	gpg --batch --keyserver keyserver.ubuntu.com --recv-keys "$key"; \
 	gpg --batch --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	command -v gpgconf > /dev/null && gpgconf --kill all; \
 	rm -rf "$GNUPGHOME"; \
diff --git a/13/buster/Dockerfile b/13/buster/Dockerfile
index 6ce45fa7db..98e3048e6a 100644
--- a/13/buster/Dockerfile
+++ b/13/buster/Dockerfile
@@ -81,7 +81,7 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	gpg --batch --keyserver keyserver.ubuntu.com --recv-keys "$key"; \
 	gpg --batch --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	command -v gpgconf > /dev/null && gpgconf --kill all; \
 	rm -rf "$GNUPGHOME"; \
diff --git a/9.6/buster/Dockerfile b/9.6/buster/Dockerfile
index 5c7a42fe61..e83eb2f0c3 100644
--- a/9.6/buster/Dockerfile
+++ b/9.6/buster/Dockerfile
@@ -81,7 +81,7 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	gpg --batch --keyserver keyserver.ubuntu.com --recv-keys "$key"; \
 	gpg --batch --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	command -v gpgconf > /dev/null && gpgconf --kill all; \
 	rm -rf "$GNUPGHOME"; \
diff --git a/9.6/stretch/Dockerfile b/9.6/stretch/Dockerfile
index ddd03bbf6e..0cf93843c3 100644
--- a/9.6/stretch/Dockerfile
+++ b/9.6/stretch/Dockerfile
@@ -81,7 +81,7 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	gpg --batch --keyserver keyserver.ubuntu.com --recv-keys "$key"; \
 	gpg --batch --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	command -v gpgconf > /dev/null && gpgconf --kill all; \
 	rm -rf "$GNUPGHOME"; \
diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index 95eb829801..692fb67d54 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -75,7 +75,7 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	gpg --batch --keyserver keyserver.ubuntu.com --recv-keys "$key"; \
 	gpg --batch --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	command -v gpgconf > /dev/null && gpgconf --kill all; \
 	rm -rf "$GNUPGHOME"; \