diff --git a/docker/Dockerfile.linux.amd64 b/docker/Dockerfile.linux.amd64
index 6ffe938..d8f602f 100644
--- a/docker/Dockerfile.linux.amd64
+++ b/docker/Dockerfile.linux.amd64
@@ -1,4 +1,4 @@
-FROM alpine:3.12
+FROM alpine:3.13
 RUN apk add --no-cache ca-certificates git git-lfs openssh curl perl aws-cli
 
 ADD posix/* /usr/local/bin/
diff --git a/docker/Dockerfile.linux.arm b/docker/Dockerfile.linux.arm
index faf6927..6003c38 100644
--- a/docker/Dockerfile.linux.arm
+++ b/docker/Dockerfile.linux.arm
@@ -1,4 +1,4 @@
-FROM arm32v6/alpine:3.12
+FROM arm32v6/alpine:3.13
 RUN apk add --no-cache ca-certificates git git-lfs openssh curl perl
 
 ADD posix/* /usr/local/bin/
diff --git a/docker/Dockerfile.linux.arm6 b/docker/Dockerfile.linux.arm6
index faf6927..6003c38 100644
--- a/docker/Dockerfile.linux.arm6
+++ b/docker/Dockerfile.linux.arm6
@@ -1,4 +1,4 @@
-FROM arm32v6/alpine:3.12
+FROM arm32v6/alpine:3.13
 RUN apk add --no-cache ca-certificates git git-lfs openssh curl perl
 
 ADD posix/* /usr/local/bin/
diff --git a/docker/Dockerfile.linux.arm64 b/docker/Dockerfile.linux.arm64
index 16672d5..d415727 100644
--- a/docker/Dockerfile.linux.arm64
+++ b/docker/Dockerfile.linux.arm64
@@ -1,4 +1,4 @@
-FROM arm64v8/alpine:3.12
+FROM arm64v8/alpine:3.13
 RUN apk add --no-cache ca-certificates git git-lfs openssh curl perl
 
 ADD posix/* /usr/local/bin/
diff --git a/docker/Dockerfile.linux.arm7 b/docker/Dockerfile.linux.arm7
index faf6927..6003c38 100644
--- a/docker/Dockerfile.linux.arm7
+++ b/docker/Dockerfile.linux.arm7
@@ -1,4 +1,4 @@
-FROM arm32v6/alpine:3.12
+FROM arm32v6/alpine:3.13
 RUN apk add --no-cache ca-certificates git git-lfs openssh curl perl
 
 ADD posix/* /usr/local/bin/
diff --git a/docker/Dockerfile.linux.arm8 b/docker/Dockerfile.linux.arm8
index 16672d5..d415727 100644
--- a/docker/Dockerfile.linux.arm8
+++ b/docker/Dockerfile.linux.arm8
@@ -1,4 +1,4 @@
-FROM arm64v8/alpine:3.12
+FROM arm64v8/alpine:3.13
 RUN apk add --no-cache ca-certificates git git-lfs openssh curl perl
 
 ADD posix/* /usr/local/bin/