diff --git a/Dockerfile b/Dockerfile
index bad58133..031d68b0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -34,7 +34,7 @@ GOOS=linux GOARCH=amd64 CGO_ENABLED=1 go build -tags netgo -ldflags '-s -w -link
 # ===================================
 # ===== Authelia official image =====
 # ===================================
-FROM alpine:3.13.3
+FROM alpine:3.13.4
 
 WORKDIR /app
 
diff --git a/Dockerfile.coverage b/Dockerfile.coverage
index 44d04ba0..642291cc 100644
--- a/Dockerfile.coverage
+++ b/Dockerfile.coverage
@@ -46,7 +46,7 @@ go test -c --tags coverage -covermode=atomic -o authelia -coverpkg github.com/au
 # ===================================
 # ===== Authelia official image =====
 # ===================================
-FROM alpine:3.13.3
+FROM alpine:3.13.4
 
 RUN apk --no-cache add ca-certificates tzdata
 
diff --git a/internal/suites/example/compose/kind/Dockerfile b/internal/suites/example/compose/kind/Dockerfile
index 99eb905c..54894718 100644
--- a/internal/suites/example/compose/kind/Dockerfile
+++ b/internal/suites/example/compose/kind/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.13.3
+FROM alpine:3.13.4
 
 WORKDIR /kind
 
diff --git a/internal/suites/example/compose/samba/Dockerfile b/internal/suites/example/compose/samba/Dockerfile
index 1671824a..40b345db 100644
--- a/internal/suites/example/compose/samba/Dockerfile
+++ b/internal/suites/example/compose/samba/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.13.3
+FROM alpine:3.13.4
 
 RUN \
 apk add --no-cache \