diff --git a/Dockerfile b/Dockerfile
index 587f699..53601ea 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@ COPY frontend ./
 RUN npm run build
 
 # --- Backend build stage ---
-FROM rust:1.89-bookworm as backend-builder
+FROM rust:1.90-bookworm as backend-builder
 
 # Install system dependencies for OCR and PDF processing
 RUN apt-get update && apt-get install -y \
diff --git a/Dockerfile.stress b/Dockerfile.stress
index 119bfe7..c5c8061 100644
--- a/Dockerfile.stress
+++ b/Dockerfile.stress
@@ -1,5 +1,5 @@
 # Multi-stage Dockerfile for WebDAV Stress Testing
-FROM rust:1.75-alpine AS builder
+FROM rust:1.90-alpine AS builder
 
 # Install build dependencies
 RUN apk add --no-cache \