diff --git a/.gitmodules b/.gitmodules
index a754c49..1d5da96 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
-[submodule "themes/whiteplain"]
-	path = themes/whiteplain
-	url = https://github.com/taikii/whiteplain.git
+[submodule "themes/natrium"]
+	path = themes/natrium
+	url = https://github.com/mobybit/hugo-natrium-theme.git
diff --git a/themes/natrium b/themes/natrium
new file mode 160000
index 0000000..e2145b8
--- /dev/null
+++ b/themes/natrium
@@ -0,0 +1 @@
+Subproject commit e2145b8d57ac3a0368860b6d9d708c5fb036a582
diff --git a/themes/whiteplain b/themes/whiteplain
deleted file mode 160000
index c116722..0000000
--- a/themes/whiteplain
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit c1167220ccc7c0303b3ffe407025b936f4714a65