diff --git a/external/MbedTLS/mbedtls-init-cache.cmake.in b/external/MbedTLS/mbedtls-init-cache.cmake.in
index 62d33ef..c60bbf2 100644
--- a/external/MbedTLS/mbedtls-init-cache.cmake.in
+++ b/external/MbedTLS/mbedtls-init-cache.cmake.in
@@ -14,6 +14,8 @@
 set(EXTERNAL_DEFINITIONS -DMBEDTLS_USER_CONFIG_FILE="@MBEDTLS_USER_CONFIG_FILE@" CACHE STRING "")
 set(EXTERNAL_INCLUDE_PATHS @MBEDTLS_EXTRA_INCLUDES@ CACHE STRING "")
 
+set(Python3_EXECUTABLE "@Python3_EXECUTABLE@" CACHE PATH "Location of python3 executable")
+
 string(TOUPPER @CMAKE_CROSSCOMPILING@ CMAKE_CROSSCOMPILING) # CMake expects TRUE
 if (CMAKE_CROSSCOMPILING)
 	set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY CACHE STRING "")