diff --git a/infra/docker/Dockerfile.backend b/infra/docker/Dockerfile.backend
index b6de56c..ee01a33 100644
--- a/infra/docker/Dockerfile.backend
+++ b/infra/docker/Dockerfile.backend
@@ -22,6 +22,9 @@ COPY services/backend ./services/backend
 # Install dependencies
 RUN pnpm install --frozen-lockfile
 
+# Build shared workspace dependency first
+RUN pnpm --filter './packages/shared' run build
+
 # Build backend
 RUN pnpm --filter './services/backend' run build
 
diff --git a/infra/docker/Dockerfile.discord-gateway b/infra/docker/Dockerfile.discord-gateway
index 491f14c..a00aa74 100644
--- a/infra/docker/Dockerfile.discord-gateway
+++ b/infra/docker/Dockerfile.discord-gateway
@@ -28,6 +28,9 @@ COPY services/discord-gateway/drizzle ./drizzle
 # Install dependencies
 RUN pnpm install --frozen-lockfile
 
+# Build shared workspace dependency first
+RUN pnpm --filter './packages/shared' run build
+
 # Build discord gateway
 RUN pnpm --filter './services/discord-gateway' run build