diff --git a/infra/docker/Dockerfile.ci-builder b/infra/docker/Dockerfile.ci-builder
index 51f5df409..b6323159a 100644
--- a/infra/docker/Dockerfile.ci-builder
+++ b/infra/docker/Dockerfile.ci-builder
@@ -54,6 +54,11 @@ RUN curl -fsSL https://downloads.rclone.org/v1.69.1/rclone-v1.69.1-linux-amd64.z
 # clippy pre-installed
 RUN rustup component add clippy
 
+# Nsight Systems CLI — GPU profiling for CUDA graph node-level traces
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    nsight-systems-cli \
+    && rm -rf /var/lib/apt/lists/*
+
 # CUDA env
 ENV CUDA_HOME=/usr/local/cuda
 ENV PATH="${CUDA_HOME}/bin:${PATH}"