diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..4ae1a7f
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "extern/libphysis"]
+	path = extern/libphysis
+	url = https://git.sr.ht/~redstrate/libphysis
diff --git a/extern/CMakeLists.txt b/extern/CMakeLists.txt
index a5fdd5a..601e3b5 100644
--- a/extern/CMakeLists.txt
+++ b/extern/CMakeLists.txt
@@ -3,19 +3,12 @@
 
 find_package(Corrosion REQUIRED)
 
-FetchContent_Declare(
-        libphysis
-        GIT_REPOSITORY https://git.sr.ht/~redstrate/libphysis
-        GIT_TAG        main
-)
 
-FetchContent_MakeAvailable(libphysis)
+corrosion_import_crate(MANIFEST_PATH ${CMAKE_CURRENT_SOURCE_DIR}/libphysis/Cargo.toml)
 
-corrosion_import_crate(MANIFEST_PATH ${libphysis_SOURCE_DIR}/Cargo.toml)
-
-target_include_directories(physis INTERFACE ${libphysis_SOURCE_DIR}/target/public)
+target_include_directories(physis INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/libphysis/target/public)
 target_link_libraries(physis INTERFACE unshield)
 
 add_subdirectory(magic_enum)
 add_subdirectory(tinygltf)
-add_subdirectory(imgui)
\ No newline at end of file
+add_subdirectory(imgui)
diff --git a/extern/libphysis b/extern/libphysis
new file mode 160000
index 0000000..6992aff
--- /dev/null
+++ b/extern/libphysis
@@ -0,0 +1 @@
+Subproject commit 6992aff3c2898349b9b17b9682364280c90ed8a9