diff --git a/backend/Dockerfile.test-rust b/backend/Dockerfile.test-rust
index 47a49d2..17fff6d 100644
--- a/backend/Dockerfile.test-rust
+++ b/backend/Dockerfile.test-rust
@@ -24,9 +24,7 @@ COPY --from=deps /app/target /app/target
 COPY . .
 RUN cargo build --release --locked
 
-# runtime: minimal test environment with PostgreSQL client
+# runtime: minimal test environment - reuse builder stage which already has dependencies
 FROM docker.io/rust:1.89-slim AS runtime
-# Install PostgreSQL client using static binary to avoid seccomp issues
-RUN curl -fsSL https://github.com/wrouesnel/postgresql-client/releases/download/v15.7.0/pg15.7.0-linux-amd64.tar.gz | tar -xz -C /usr/local/bin --strip-components=1
 WORKDIR /workspace/backend
 CMD ["sleep", "infinity"]
\ No newline at end of file