diff --git a/frontend/Dockerfile.dev b/frontend/Dockerfile.dev
index 345edc5a..da8598e6 100644
--- a/frontend/Dockerfile.dev
+++ b/frontend/Dockerfile.dev
@@ -6,8 +6,8 @@ WORKDIR /app
 # Copy package files
 COPY package*.json ./
 
-# Install dependencies
-RUN npm install
+# Install dependencies (use --legacy-peer-deps to handle React 19 peer dependency conflicts)
+RUN npm install --legacy-peer-deps
 
 # Copy source code (will be mounted as volume, but needed for initial setup)
 COPY . .