diff --git a/.gitmodules b/.gitmodules
index c861bf22..20beff54 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -41,3 +41,6 @@
 [submodule "external/egami"]
 	path = external/egami
 	url = https://github.com/HeeroYui/egami.git
+[submodule "external/ejson"]
+	path = external/ejson
+	url = https://github.com/HeeroYui/ejson.git
diff --git a/external/ejson b/external/ejson
new file mode 160000
index 00000000..217c1947
--- /dev/null
+++ b/external/ejson
@@ -0,0 +1 @@
+Subproject commit 217c1947651b35724df50c2319e1f16296649169
diff --git a/external/esvg b/external/esvg
index 51c6650a..32c4469c 160000
--- a/external/esvg
+++ b/external/esvg
@@ -1 +1 @@
-Subproject commit 51c6650a0a0ef3c49246dd71f7c240102f2939c6
+Subproject commit 32c4469c127fed6ff4f3c9a7031eb7e76f72c43b
diff --git a/external/etk b/external/etk
index b9a79c1d..3c27f446 160000
--- a/external/etk
+++ b/external/etk
@@ -1 +1 @@
-Subproject commit b9a79c1dfceb04fc2e488832260a26c03055bd98
+Subproject commit 3c27f446f4f33bede07292ab3512c4ab4c531f9e