diff --git a/demo/orchestrator/Dockerfile b/demo/orchestrator/Dockerfile
index c3ca2e5..4ce6bc4 100644
--- a/demo/orchestrator/Dockerfile
+++ b/demo/orchestrator/Dockerfile
@@ -11,7 +11,9 @@ COPY web/ .
 RUN npm run build -- --configuration production
 
 # --- Etage 2 : build orchestrateur Go ---
-FROM golang:1.22-alpine AS go-build
+# go 1.25+ requis par une dependance transitive de github.com/docker/docker
+# (otelhttp v0.68+ impose cette version minimale).
+FROM golang:1.25-alpine AS go-build
 WORKDIR /src
 COPY demo/orchestrator/ ./
 # go mod tidy resout le go.sum au build pour eviter d'avoir a le committer.
diff --git a/demo/orchestrator/go.mod b/demo/orchestrator/go.mod
index 35bbc5a..e0d607f 100644
--- a/demo/orchestrator/go.mod
+++ b/demo/orchestrator/go.mod
@@ -1,6 +1,6 @@
 module github.com/loremind/demo-orchestrator
 
-go 1.22
+go 1.23
 
 require (
 	github.com/docker/docker v27.3.1+incompatible