diff --git a/.gitmodules b/.gitmodules
index 5765c51b9118..5fb6b607fa78 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -52,3 +52,12 @@
 [submodule "third-party/cpuinfo"]
 	path = third_party/cpuinfo
 	url = https://github.com/Maratyszcza/cpuinfo.git
+[submodule "third_party/python-enum"]
+	path = third_party/python-enum
+	url = https://github.com/PeachPy/enum34.git
+[submodule "third_party/python-peachpy"]
+	path = third_party/python-peachpy
+	url = https://github.com/Maratyszcza/PeachPy.git
+[submodule "third_party/python-six"]
+	path = third_party/python-six
+	url = https://github.com/benjaminp/six.git
diff --git a/cmake/External/nnpack.cmake b/cmake/External/nnpack.cmake
index ba9224537728..78302af8e356 100644
--- a/cmake/External/nnpack.cmake
+++ b/cmake/External/nnpack.cmake
@@ -59,6 +59,9 @@ if (ANDROID OR IOS OR ${CMAKE_SYSTEM_NAME} STREQUAL "Linux" OR ${CMAKE_SYSTEM_NA
     CACHE PATH "Confu-style dependencies binary directory")
 
   # Directories for NNPACK dependencies submoduled in Caffe2
+  set(PYTHON_SIX_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/python-six" CACHE STRING "six (Python package) source directory")
+  set(PYTHON_ENUM_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/python-enum" CACHE STRING "enum34 (Python package) source directory")
+  set(PYTHON_PEACHPY_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/python-peachpy" CACHE STRING "PeachPy (Python package) source directory")
   set(CPUINFO_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/cpuinfo" CACHE STRING "cpuinfo source directory")
   set(FP16_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/FP16" CACHE STRING "FP16 source directory")
   set(FXDIV_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/FXdiv" CACHE STRING "FXdiv source directory")
diff --git a/third_party/NNPACK b/third_party/NNPACK
index f624fd82ebae..be6f1d2aeb99 160000
--- a/third_party/NNPACK
+++ b/third_party/NNPACK
@@ -1 +1 @@
-Subproject commit f624fd82ebae2a257df01c999e42c023b7356517
+Subproject commit be6f1d2aeb993920969c00003dd321e33cb66924
diff --git a/third_party/python-enum b/third_party/python-enum
new file mode 120000
index 000000000000..daae8779671c
--- /dev/null
+++ b/third_party/python-enum
@@ -0,0 +1 @@
+Subproject commit 4cfedc426c4e2fc52e3f5c2b4297e15ed8d6b8c7
diff --git a/third_party/python-peachpy b/third_party/python-peachpy
new file mode 120000
index 000000000000..49d9a274c2f3
--- /dev/null
+++ b/third_party/python-peachpy
@@ -0,0 +1 @@
+Subproject commit 29a90844d64d41345ed2ff896157c9d2cbf93dcb
diff --git a/third_party/python-six b/third_party/python-six
new file mode 120000
index 000000000000..53578097e698
--- /dev/null
+++ b/third_party/python-six
@@ -0,0 +1 @@
+Subproject commit 15e31431af97e5e64b80af0a3f598d382bcdd49a