diff --git a/Dockerfile.client b/Dockerfile.client
index 1e5dc846..c3b66e2c 100644
--- a/Dockerfile.client
+++ b/Dockerfile.client
@@ -1,4 +1,4 @@
-FROM golang:1.25.5 as client
+FROM golang:1.26rc2 as client
 
 WORKDIR /client
 
diff --git a/changes/20260116090428.bugfix b/changes/20260116090428.bugfix
new file mode 100644
index 00000000..2db3615e
--- /dev/null
+++ b/changes/20260116090428.bugfix
@@ -0,0 +1 @@
+Dependency upgrade: golang-1.26rc2