diff --git a/infra/docker/Dockerfile.ci-builder b/infra/docker/Dockerfile.ci-builder
index 475aec1d2..690b67eee 100644
--- a/infra/docker/Dockerfile.ci-builder
+++ b/infra/docker/Dockerfile.ci-builder
@@ -55,13 +55,14 @@ RUN curl -fsSL https://downloads.rclone.org/v1.69.1/rclone-v1.69.1-linux-amd64.z
 RUN rustup component add clippy
 
 # Nsight Systems CLI — GPU profiling for CUDA graph node-level traces
-# Not in the CUDA 13 devel repo — install from NVIDIA's nsight-systems repo
-RUN curl -fsSL https://developer.download.nvidia.com/devtools/repos/ubuntu2404/amd64/nvidia-devtools-keyring_2024.1.gpg \
-    -o /usr/share/keyrings/nvidia-devtools.gpg \
-    && echo "deb [signed-by=/usr/share/keyrings/nvidia-devtools.gpg] https://developer.download.nvidia.com/devtools/repos/ubuntu2404/amd64/ /" \
-    > /etc/apt/sources.list.d/nvidia-devtools.list \
-    && apt-get update && apt-get install -y --no-install-recommends nsight-systems-cli \
-    && rm -rf /var/lib/apt/lists/*
+# The CUDA 13 devel image has NVIDIA repo configured but nsight-systems
+# package name varies. Try the full package first, fall back to CLI-only.
+RUN apt-get update \
+    && (apt-get install -y --no-install-recommends nsight-systems-2025.2.1 \
+        || apt-get install -y --no-install-recommends nsight-systems \
+        || echo "WARNING: nsight-systems not available — nsys profiling disabled") \
+    && rm -rf /var/lib/apt/lists/* \
+    && (nsys --version 2>/dev/null || true)
 
 # CUDA env
 ENV CUDA_HOME=/usr/local/cuda