diff --git a/.gitmodules b/.gitmodules
index e3afcf46..1d630634 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -697,3 +697,6 @@
 [submodule "repos/EucQuant"]
 	path = repos/EucQuant
 	url = https://github.com/sindarknave/EucQuant.git
+[submodule "repos/CosineKitty-Sapphire"]
+	path = repos/CosineKitty-Sapphire
+	url = https://github.com/cosinekitty/sapphire.git
diff --git a/repos/CosineKitty-Sapphire b/repos/CosineKitty-Sapphire
new file mode 160000
index 00000000..e2690693
--- /dev/null
+++ b/repos/CosineKitty-Sapphire
@@ -0,0 +1 @@
+Subproject commit e2690693bbf344030b9b4925c96e264808060028