diff --git a/Dockerfile b/Dockerfile
index 76f7080..9df6ab7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -62,15 +62,16 @@ RUN pip install -r /tmp/requirements.txt && rm -rf /root/.cache/pip
 
 # Compile SageAttention 2.2 from source with no build isolation
 WORKDIR /tmp
-ENV EXT_PARALLEL=1
-ENV NVCC_APPEND_FLAGS="--threads 1"
-ENV MAX_JOBS=2
+ENV EXT_PARALLEL=2
+ENV NVCC_APPEND_FLAGS="--threads 2"
+ENV MAX_JOBS=4
 # Target RunPod GPU architectures:
 # 8.0 = A100, 8.6 = A10/RTX 3090, 8.9 = RTX 4090/L40, 9.0 = H100/H200
 # Note: Blackwell (10.0) not yet supported by SageAttention
 ENV TORCH_CUDA_ARCH_LIST="8.0;8.6;8.9;9.0"
 RUN git clone https://github.com/thu-ml/SageAttention.git && \
     cd SageAttention && \
+    git checkout 2aecfa8 && \
     pip install --no-build-isolation . && \
     cd / && rm -rf /tmp/SageAttention /root/.cache/pip