diff --git a/.gitmodules b/.gitmodules
index 3179613f75..976106865c 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -70,9 +70,3 @@
 [submodule "oboe"]
 	path = externals/oboe
 	url = https://github.com/eden-emulator/oboe.git
-[submodule "externals/SPIRV-Headers"]
-	path = externals/SPIRV-Headers
-	url = https://github.com/KhronosGroup/SPIRV-Headers.git
-[submodule "externals/boost-headers"]
-	path = externals/boost-headers
-	url = https://github.com/boostorg/headers.git