diff --git a/docker/Dockerfile.ci b/docker/Dockerfile.ci
index a7c3beb9d..bd7ccd5fd 100644
--- a/docker/Dockerfile.ci
+++ b/docker/Dockerfile.ci
@@ -34,17 +34,6 @@ RUN uv pip install --system --upgrade --force-reinstall --prerelease=allow vllm
 # Install vllm-omni into the same uv-managed Python environment used by the base image.
 RUN uv pip install --python "$(python3 -c 'import sys; print(sys.executable)')" --no-cache-dir ".[dev]"
 
-# Debug: print key dependency versions for CI troubleshooting
-RUN python3 -c "\
-import transformers, torch, vllm; \
-print(f'transformers={transformers.__version__}'); \
-print(f'torch={torch.__version__}'); \
-print(f'vllm={vllm.__version__}'); \
-print(f'cuda={torch.version.cuda}'); \
-"
-
-RUN uv pip install transformers==4.57.6
-
 RUN ln -sf /usr/bin/python3 /usr/bin/python
 
 ENTRYPOINT []
diff --git a/pyproject.toml b/pyproject.toml
index 6af193953..34a7c977e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,7 +48,8 @@ dev = [
     "soundfile>=0.13.1",
     "imageio[ffmpeg]>=0.6.0",
     "opencv-python>=4.12.0.88",
-    "mooncake-transfer-engine==0.3.8.post1"
+    "mooncake-transfer-engine==0.3.8.post1",
+    "transformers==4.57.6"
 ]
 
 docs = [