diff --git a/Dockerfile b/Dockerfile
index c64ad8142..24a23c052 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,7 +16,7 @@ COPY frontend/ ./
 RUN npm run build
 
 # Stage 2: Build Go binary
-FROM golang:1.25.7-alpine AS builder
+FROM golang:1.26rc3-alpine AS builder
 
 # Install build dependencies (no gcc/musl-dev needed - pure Go SQLite driver)
 RUN apk add --no-cache git tzdata