diff --git a/.gitmodules b/.gitmodules
index fdbe4da..51989b1 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,15 +1,3 @@
-[submodule "content/themes/paper"]
-	path = content/themes/paper
-	url = https://github.com/nanxiaobei/hugo-paper
 [submodule "content/themes/ananke"]
 	path = content/themes/ananke
 	url = https://github.com/theNewDynamic/gohugo-theme-ananke.git
-[submodule "content/themes/hugo-book"]
-	path = content/themes/hugo-book
-	url = https://github.com/alex-shpak/hugo-book
-[submodule "content/themes/archie"]
-	path = content/themes/archie
-	url = https://github.com/athul/archie.git
-[submodule "content/themes/ed"]
-	path = content/themes/ed
-	url = https://github.com/sergeyklay/gohugo-theme-ed
diff --git a/content/themes/archie b/content/themes/archie
deleted file mode 160000
index 0de4e95..0000000
--- a/content/themes/archie
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 0de4e95a874551a8b83a058888c6bf3edea9f559
diff --git a/content/themes/ed b/content/themes/ed
deleted file mode 160000
index 93a8208..0000000
--- a/content/themes/ed
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 93a820852fa62f32ad6e2c665a1cef1cab6159ca
diff --git a/content/themes/hugo-book b/content/themes/hugo-book
deleted file mode 160000
index 7c78a39..0000000
--- a/content/themes/hugo-book
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 7c78a39c531aa2492ed7e92f2ce9dfb2c8c0d3fa
diff --git a/content/themes/paper b/content/themes/paper
deleted file mode 160000
index 8eeb1e8..0000000
--- a/content/themes/paper
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 8eeb1e8a513d3a0e32e0b305d445c3f6d545eeb3