diff --git a/backup-tools/Dockerfile b/backup-tools/Dockerfile
index f8519b0..5cc61be 100644
--- a/backup-tools/Dockerfile
+++ b/backup-tools/Dockerfile
@@ -1,7 +1,7 @@
 #
 # Base image
 #
-FROM --platform=linux/amd64 debian:12-slim
+FROM --platform=linux/amd64 debian:13-slim@sha256:4e401d95de7083948053197a9c3913343cd06b706bf15eb6a0c3ccd26f436a0e
 
 ARG http_proxy=${http_proxy:-}
 ARG https_proxy=${https_proxy:-}
diff --git a/k8s-tools/Dockerfile b/k8s-tools/Dockerfile
index bd3b4ec..f393a31 100644
--- a/k8s-tools/Dockerfile
+++ b/k8s-tools/Dockerfile
@@ -1,7 +1,7 @@
 #
 # Base image
 #
-FROM --platform=linux/amd64 debian:bullseye
+FROM --platform=linux/amd64 debian:trixie-20260610@sha256:fe7312b5f05bf5f43fad76bcd8945642e4e47a68aefd1b73f447615899d0fac1
 
 ARG http_proxy=${http_proxy:-}
 ARG https_proxy=${https_proxy:-}
diff --git a/outscale-cli/Dockerfile b/outscale-cli/Dockerfile
index 587587d..b9db790 100644
--- a/outscale-cli/Dockerfile
+++ b/outscale-cli/Dockerfile
@@ -1,7 +1,7 @@
 #
 # Base image
 #
-FROM --platform=linux/amd64 debian:12-slim
+FROM --platform=linux/amd64 debian:13-slim@sha256:4e401d95de7083948053197a9c3913343cd06b706bf15eb6a0c3ccd26f436a0e
 
 ARG http_proxy=${http_proxy:-}
 ARG https_proxy=${https_proxy:-}