diff --git a/20.10/cli/Dockerfile b/20.10/cli/Dockerfile
index 64a22aa38..78e574e2e 100644
--- a/20.10/cli/Dockerfile
+++ b/20.10/cli/Dockerfile
@@ -4,7 +4,7 @@
 # PLEASE DO NOT EDIT IT DIRECTLY.
 #
 
-FROM alpine:3.17
+FROM alpine:3.18
 
 RUN apk add --no-cache \
 		ca-certificates \
diff --git a/23.0/cli/Dockerfile b/23.0/cli/Dockerfile
index c8debf726..4327823c8 100644
--- a/23.0/cli/Dockerfile
+++ b/23.0/cli/Dockerfile
@@ -4,7 +4,7 @@
 # PLEASE DO NOT EDIT IT DIRECTLY.
 #
 
-FROM alpine:3.17
+FROM alpine:3.18
 
 RUN apk add --no-cache \
 		ca-certificates \
diff --git a/24-rc/cli/Dockerfile b/24-rc/cli/Dockerfile
index eeb0e0766..8f246f9ca 100644
--- a/24-rc/cli/Dockerfile
+++ b/24-rc/cli/Dockerfile
@@ -4,7 +4,7 @@
 # PLEASE DO NOT EDIT IT DIRECTLY.
 #
 
-FROM alpine:3.17
+FROM alpine:3.18
 
 RUN apk add --no-cache \
 		ca-certificates \
diff --git a/Dockerfile-cli.template b/Dockerfile-cli.template
index a2f3ee7f9..61cd9bda7 100644
--- a/Dockerfile-cli.template
+++ b/Dockerfile-cli.template
@@ -1,5 +1,5 @@
 {{ include "shared" -}}
-FROM alpine:3.17
+FROM alpine:3.18
 
 RUN apk add --no-cache \
 		ca-certificates \