diff --git a/10/alpine/Dockerfile b/10/alpine/Dockerfile
index 0082ef6855..970a50187c 100644
--- a/10/alpine/Dockerfile
+++ b/10/alpine/Dockerfile
@@ -1,5 +1,5 @@
 # vim:set ft=dockerfile:
-FROM alpine:3.12
+FROM alpine:3.13
 
 # 70 is the standard uid/gid for "postgres" in Alpine
 # https://git.alpinelinux.org/aports/tree/main/postgresql/postgresql.pre-install?h=3.12-stable
diff --git a/11/alpine/Dockerfile b/11/alpine/Dockerfile
index ce9b86cba5..28a413962f 100644
--- a/11/alpine/Dockerfile
+++ b/11/alpine/Dockerfile
@@ -1,5 +1,5 @@
 # vim:set ft=dockerfile:
-FROM alpine:3.12
+FROM alpine:3.13
 
 # 70 is the standard uid/gid for "postgres" in Alpine
 # https://git.alpinelinux.org/aports/tree/main/postgresql/postgresql.pre-install?h=3.12-stable
diff --git a/12/alpine/Dockerfile b/12/alpine/Dockerfile
index 22e1ff9833..1e0819fc7b 100644
--- a/12/alpine/Dockerfile
+++ b/12/alpine/Dockerfile
@@ -1,5 +1,5 @@
 # vim:set ft=dockerfile:
-FROM alpine:3.12
+FROM alpine:3.13
 
 # 70 is the standard uid/gid for "postgres" in Alpine
 # https://git.alpinelinux.org/aports/tree/main/postgresql/postgresql.pre-install?h=3.12-stable
diff --git a/13/alpine/Dockerfile b/13/alpine/Dockerfile
index 42b80a581e..4144ffa13c 100644
--- a/13/alpine/Dockerfile
+++ b/13/alpine/Dockerfile
@@ -1,5 +1,5 @@
 # vim:set ft=dockerfile:
-FROM alpine:3.12
+FROM alpine:3.13
 
 # 70 is the standard uid/gid for "postgres" in Alpine
 # https://git.alpinelinux.org/aports/tree/main/postgresql/postgresql.pre-install?h=3.12-stable
diff --git a/9.5/alpine/Dockerfile b/9.5/alpine/Dockerfile
index 77e889dea5..d10dd14788 100644
--- a/9.5/alpine/Dockerfile
+++ b/9.5/alpine/Dockerfile
@@ -1,5 +1,5 @@
 # vim:set ft=dockerfile:
-FROM alpine:3.12
+FROM alpine:3.13
 
 # 70 is the standard uid/gid for "postgres" in Alpine
 # https://git.alpinelinux.org/aports/tree/main/postgresql/postgresql.pre-install?h=3.12-stable
diff --git a/9.6/alpine/Dockerfile b/9.6/alpine/Dockerfile
index 0210f19152..784b345aad 100644
--- a/9.6/alpine/Dockerfile
+++ b/9.6/alpine/Dockerfile
@@ -1,5 +1,5 @@
 # vim:set ft=dockerfile:
-FROM alpine:3.12
+FROM alpine:3.13
 
 # 70 is the standard uid/gid for "postgres" in Alpine
 # https://git.alpinelinux.org/aports/tree/main/postgresql/postgresql.pre-install?h=3.12-stable
diff --git a/update.sh b/update.sh
index c88e04db65..1b807deadd 100755
--- a/update.sh
+++ b/update.sh
@@ -18,7 +18,7 @@ declare -A debianSuite=(
 	[10]='stretch-slim'
 	[11]='stretch-slim'
 )
-defaultAlpineVersion='3.12'
+defaultAlpineVersion='3.13'
 declare -A alpineVersion=(
 	#[9.6]='3.5'
 )