diff --git a/dockerfile b/dockerfile
index 96c5b95..f51f901 100644
--- a/dockerfile
+++ b/dockerfile
@@ -15,8 +15,8 @@ RUN npm ci
 # Copy source
 COPY . .
 
-# Generate Prisma client (explicit schema path)
-RUN npx --yes prisma@5.4.2 generate --schema=prisma/schema.prisma
+# Generate Prisma client (explicit schema path, use local binary)
+RUN ./node_modules/.bin/prisma generate --schema=prisma/schema.prisma
 
 # Optional: show versions in build log
 RUN node -v && npm -v && npx prisma -v