diff --git a/10/Dockerfile b/10/Dockerfile
index a7624394d2..e5601d1650 100644
--- a/10/Dockerfile
+++ b/10/Dockerfile
@@ -21,7 +21,8 @@ RUN set -x \
 	&& wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
 	&& wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture).asc" \
 	&& export GNUPGHOME="$(mktemp -d)" \
-	&& gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
+	&& (gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
+	        || gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4) \
 	&& gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
 	&& rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc \
 	&& chmod +x /usr/local/bin/gosu \
@@ -56,7 +57,8 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	(gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key" \
+	    || gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys "$key"); \
 	gpg --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	rm -rf "$GNUPGHOME"; \
 	apt-key list
diff --git a/11/Dockerfile b/11/Dockerfile
index d8e3ce2d7c..eea0603098 100644
--- a/11/Dockerfile
+++ b/11/Dockerfile
@@ -21,7 +21,8 @@ RUN set -x \
 	&& wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
 	&& wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture).asc" \
 	&& export GNUPGHOME="$(mktemp -d)" \
-	&& gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
+	&& (gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
+	        || gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4) \
 	&& gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
 	&& rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc \
 	&& chmod +x /usr/local/bin/gosu \
@@ -56,7 +57,8 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	(gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key" \
+	    || gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys "$key"); \
 	gpg --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	rm -rf "$GNUPGHOME"; \
 	apt-key list
diff --git a/9.3/Dockerfile b/9.3/Dockerfile
index b716d3cfa4..351ae78bf7 100644
--- a/9.3/Dockerfile
+++ b/9.3/Dockerfile
@@ -21,7 +21,8 @@ RUN set -x \
 	&& wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
 	&& wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture).asc" \
 	&& export GNUPGHOME="$(mktemp -d)" \
-	&& gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
+	&& (gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
+	        || gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4) \
 	&& gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
 	&& rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc \
 	&& chmod +x /usr/local/bin/gosu \
@@ -56,7 +57,8 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	(gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key" \
+	    || gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys "$key"); \
 	gpg --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	rm -rf "$GNUPGHOME"; \
 	apt-key list
diff --git a/9.4/Dockerfile b/9.4/Dockerfile
index d4056fec8c..09467222b5 100644
--- a/9.4/Dockerfile
+++ b/9.4/Dockerfile
@@ -21,7 +21,8 @@ RUN set -x \
 	&& wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
 	&& wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture).asc" \
 	&& export GNUPGHOME="$(mktemp -d)" \
-	&& gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
+	&& (gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
+	        || gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4) \
 	&& gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
 	&& rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc \
 	&& chmod +x /usr/local/bin/gosu \
@@ -56,7 +57,8 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	(gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key" \
+	    || gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys "$key"); \
 	gpg --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	rm -rf "$GNUPGHOME"; \
 	apt-key list
diff --git a/9.5/Dockerfile b/9.5/Dockerfile
index 451d014578..b2c82c859d 100644
--- a/9.5/Dockerfile
+++ b/9.5/Dockerfile
@@ -21,7 +21,8 @@ RUN set -x \
 	&& wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
 	&& wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture).asc" \
 	&& export GNUPGHOME="$(mktemp -d)" \
-	&& gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
+	&& (gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
+	        || gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4) \
 	&& gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
 	&& rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc \
 	&& chmod +x /usr/local/bin/gosu \
@@ -56,7 +57,8 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	(gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key" \
+	    || gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys "$key"); \
 	gpg --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	rm -rf "$GNUPGHOME"; \
 	apt-key list
diff --git a/9.6/Dockerfile b/9.6/Dockerfile
index 77907dbe45..67f126120e 100644
--- a/9.6/Dockerfile
+++ b/9.6/Dockerfile
@@ -21,7 +21,8 @@ RUN set -x \
 	&& wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
 	&& wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture).asc" \
 	&& export GNUPGHOME="$(mktemp -d)" \
-	&& gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
+	&& (gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
+	        || gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4) \
 	&& gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
 	&& rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc \
 	&& chmod +x /usr/local/bin/gosu \
@@ -56,7 +57,8 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	(gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key" \
+	    || gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys "$key"); \
 	gpg --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	rm -rf "$GNUPGHOME"; \
 	apt-key list
diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index 715d968bf3..2a2329bcfd 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -21,7 +21,8 @@ RUN set -x \
 	&& wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
 	&& wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture).asc" \
 	&& export GNUPGHOME="$(mktemp -d)" \
-	&& gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
+	&& (gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
+	        || gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4) \
 	&& gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
 	&& rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc \
 	&& chmod +x /usr/local/bin/gosu \
@@ -56,7 +57,8 @@ RUN set -ex; \
 # uid                  PostgreSQL Debian Repository
 	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
 	export GNUPGHOME="$(mktemp -d)"; \
-	gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
+	(gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key" \
+	    || gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys "$key"); \
 	gpg --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
 	rm -rf "$GNUPGHOME"; \
 	apt-key list

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