diff --git a/mainline/alpine-perl/Dockerfile b/mainline/alpine-perl/Dockerfile
index 53269308a5ee92854b2a99c03778268d776e3bd1..ae3b6ba2cae07152bdf6da6d047be8919ff7dd3a 100644
--- a/mainline/alpine-perl/Dockerfile
+++ b/mainline/alpine-perl/Dockerfile
@@ -3,7 +3,7 @@
 #
 # PLEASE DO NOT EDIT IT DIRECTLY.
 #
-FROM alpine:3.12
+FROM alpine:3.13
 
 LABEL maintainer="NGINX Docker Maintainers <docker-maint@nginx.com>"
 
diff --git a/mainline/alpine/Dockerfile b/mainline/alpine/Dockerfile
index deafec0890d5d2ede6ffda7fb44ae38d60cbcc69..11eeab8da02898de691dcb3126a9e18040875e60 100644
--- a/mainline/alpine/Dockerfile
+++ b/mainline/alpine/Dockerfile
@@ -3,7 +3,7 @@
 #
 # PLEASE DO NOT EDIT IT DIRECTLY.
 #
-FROM alpine:3.12
+FROM alpine:3.13
 
 LABEL maintainer="NGINX Docker Maintainers <docker-maint@nginx.com>"
 
diff --git a/update.sh b/update.sh
index 828859fd116954b96e17389063430734b548e3ea..49ec3c878f0dd03ca06dc824efaa95bb13b50b2b 100755
--- a/update.sh
+++ b/update.sh
@@ -29,7 +29,7 @@ declare -A debian=(
     #[stable]='stretch'
 )
 
-defaultalpine='3.12'
+defaultalpine='3.13'
 declare -A alpine=(
     [stable]='3.11'
 )