diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..116f810
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "BetterInternalCore"]
+	path = Assets/BetterInternalCore
+	url = git@github.com:techno-dwarf-works/better-internal-core.git
+	branch = upm
diff --git a/Assets/BetterInternalCore b/Assets/BetterInternalCore
new file mode 160000
index 0000000..dd654e2
--- /dev/null
+++ b/Assets/BetterInternalCore
@@ -0,0 +1 @@
+Subproject commit dd654e230a625f65aa84468bfcc24b6d326521c8
diff --git a/Assets/BetterInternalCore.meta b/Assets/BetterInternalCore.meta
new file mode 100644
index 0000000..7270de8
--- /dev/null
+++ b/Assets/BetterInternalCore.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: d406836cf805ec0428794794275dbebc
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Packages/manifest.json b/Packages/manifest.json
index fb387a3..a64183a 100644
--- a/Packages/manifest.json
+++ b/Packages/manifest.json
@@ -1,6 +1,5 @@
 {
   "dependencies": {
-    "com.tdw.better.internal.core": "0.0.2",
     "com.unity.collab-proxy": "2.0.1",
     "com.unity.feature.development": "1.0.1",
     "com.unity.ide.rider": "3.0.18",
diff --git a/Packages/packages-lock.json b/Packages/packages-lock.json
index 3398798..3172caf 100644
--- a/Packages/packages-lock.json
+++ b/Packages/packages-lock.json
@@ -1,12 +1,5 @@
 {
   "dependencies": {
-    "com.tdw.better.internal.core": {
-      "version": "0.0.2",
-      "depth": 0,
-      "source": "registry",
-      "dependencies": {},
-      "url": "https://package.openupm.com"
-    },
     "com.unity.collab-proxy": {
       "version": "2.0.1",
       "depth": 0,