diff --git a/.gitmodules b/.gitmodules
index ef19bba..d013618 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,6 +4,7 @@
 [submodule "Keishiki/ext/imgui"]
 	path = Keishiki/ext/imgui
 	url = https://github.com/ocornut/imgui.git
+	branch = docking
 [submodule "Keishiki/ext/freetype"]
 	path = Keishiki/ext/freetype
 	url = https://github.com/freetype/freetype.git
diff --git a/Keishiki/ext/bgfx b/Keishiki/ext/bgfx
index 19cb98d..c2b7416 160000
--- a/Keishiki/ext/bgfx
+++ b/Keishiki/ext/bgfx
@@ -1 +1 @@
-Subproject commit 19cb98d40b3d43482bca299ec752aeacd83b21eb
+Subproject commit c2b7416a58a8610eecba5f6e3940e30c1b64e1f9
diff --git a/Keishiki/ext/freetype b/Keishiki/ext/freetype
index d41a855..73720c7 160000
--- a/Keishiki/ext/freetype
+++ b/Keishiki/ext/freetype
@@ -1 +1 @@
-Subproject commit d41a855aab6d8ce131c465ce01f0f536e0fb2269
+Subproject commit 73720c7c9958e87b3d134a7574d1720ad2d24442