diff --git a/.github/workflows/pull.yml b/.github/workflows/pull.yml
index 6825eff0fe4..c82e9daf5d4 100644
--- a/.github/workflows/pull.yml
+++ b/.github/workflows/pull.yml
@@ -221,7 +221,7 @@ jobs:
         PYTHON_EXECUTABLE=python bash .ci/scripts/setup-linux.sh "cmake"
 
         # install pybind
-        bash install_executorch.sh --pybind xnnpack
+        bash install_executorch.sh --pybind xnnpack --use-pt-pinned-commit
 
         # install Llava requirements
         bash examples/models/llama/install_requirements.sh
@@ -478,7 +478,7 @@ jobs:
         PYTHON_EXECUTABLE=python bash .ci/scripts/setup-linux.sh "cmake"
 
         # install pybind
-        bash install_executorch.sh --pybind xnnpack
+        bash install_executorch.sh --pybind xnnpack --use-pt-pinned-commit
 
         # install phi-3-mini requirements
         bash examples/models/phi-3-mini/install_requirements.sh
@@ -508,7 +508,7 @@ jobs:
         PYTHON_EXECUTABLE=python bash .ci/scripts/setup-linux.sh "cmake"
 
         # install pybind
-        bash install_executorch.sh --pybind xnnpack
+        bash install_executorch.sh --pybind xnnpack --use-pt-pinned-commit
 
         # install llama requirements
         bash examples/models/llama/install_requirements.sh
@@ -538,7 +538,7 @@ jobs:
         PYTHON_EXECUTABLE=python bash .ci/scripts/setup-linux.sh "cmake"
 
         # install pybind
-        bash install_executorch.sh --pybind xnnpack
+        bash install_executorch.sh --pybind xnnpack --use-pt-pinned-commit
 
         # install llama requirements
         bash examples/models/llama/install_requirements.sh
@@ -568,7 +568,7 @@ jobs:
         PYTHON_EXECUTABLE=python bash .ci/scripts/setup-linux.sh "cmake"
 
         # install pybind
-        bash install_executorch.sh --pybind xnnpack
+        bash install_executorch.sh --pybind xnnpack --use-pt-pinned-commit
 
         # install llama requirements
         bash examples/models/llama/install_requirements.sh