diff --git a/386/Dockerfile b/386/Dockerfile
index f380ed4..2ba4432 100644
--- a/386/Dockerfile
+++ b/386/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.13.2
+FROM alpine:3.13.5
 
 # Whenever possible, install tools using the distro package manager
 RUN apk add --no-cache tini ttyd socat nginx unzip openssl openssh ca-certificates  && \
diff --git a/amd64/Dockerfile b/amd64/Dockerfile
index bb8a51a..4c49d99 100644
--- a/amd64/Dockerfile
+++ b/amd64/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.13.2
+FROM alpine:3.13.5
 
 # Whenever possible, install tools using the distro package manager
 RUN apk add --no-cache tini ttyd socat nginx unzip openssl openssh ca-certificates  && \
diff --git a/arm64/Dockerfile b/arm64/Dockerfile
index fc0d012..5be92d2 100644
--- a/arm64/Dockerfile
+++ b/arm64/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.13.2
+FROM alpine:3.13.5
 
 # Whenever possible, install tools using the distro package manager
 RUN apk add --no-cache tini ttyd socat nginx unzip openssl openssh ca-certificates  && \
diff --git a/armv7/Dockerfile b/armv7/Dockerfile
index fe3d0fb..8001ad2 100644
--- a/armv7/Dockerfile
+++ b/armv7/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.13.2
+FROM alpine:3.13.5
 
 # Whenever possible, install tools using the distro package manager
 RUN apk add --no-cache tini ttyd socat nginx unzip openssl openssh ca-certificates  && \