diff --git a/cmake/toolchain_aarch64-none-elf.cmake b/cmake/toolchain_aarch64-none-elf.cmake
index 3e9542be06..bac1f6a39c 100644
--- a/cmake/toolchain_aarch64-none-elf.cmake
+++ b/cmake/toolchain_aarch64-none-elf.cmake
@@ -35,10 +35,10 @@ set(MARCH_FLAGS "-march=armv8-a")
 set(TOOLCHAIN aarch64-none-elf)
 set(CMAKE_CXX_STANDARD 20)
 
-execute_process(
-    COMMAND which ${TOOLCHAIN}-gcc
-    OUTPUT_VARIABLE TOOLCHAIN_GCC_PATH
-    OUTPUT_STRIP_TRAILING_WHITESPACE)
+find_program(TOOLCHAIN_GCC_PATH
+  NAMES ${TOOLCHAIN}-gcc
+  HINTS $ENV{PATH}
+)
 
 # get toolchain version. CMAKE_C_COMPILER_VERSION cannot be used here since its not defined until
 # `project()` is run in the top-level cmake. The toolchain has to be setup before the `project` call
diff --git a/cmake/toolchain_arm-none-eabi.cmake b/cmake/toolchain_arm-none-eabi.cmake
index 4d4aa0963b..d2cea9063d 100644
--- a/cmake/toolchain_arm-none-eabi.cmake
+++ b/cmake/toolchain_arm-none-eabi.cmake
@@ -47,10 +47,10 @@ endif()
 set(TOOLCHAIN arm-none-eabi)
 set(CMAKE_CXX_STANDARD 20)
 
-execute_process(
-    COMMAND which ${TOOLCHAIN}-gcc
-    OUTPUT_VARIABLE TOOLCHAIN_GCC_PATH
-    OUTPUT_STRIP_TRAILING_WHITESPACE)
+find_program(TOOLCHAIN_GCC_PATH
+  NAMES ${TOOLCHAIN}-gcc
+  HINTS $ENV{PATH}
+)
 
 # get toolchain version. CMAKE_C_COMPILER_VERSION cannot be used here since its not defined until
 # `project()` is run in the top-level cmake. The toolchain has to be setup before the `project` call