diff --git a/.gitmodules b/.gitmodules
index 88fce49e..55a8a94f 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,3 @@
 [submodule "format-benchmark"]
 	path = format-benchmark
 	url = git://github.com/vitaut/format-benchmark.git
-[submodule "doc/sphinx"]
-	path = doc/sphinx
-	url = git://github.com/cppformat/sphinx.git
diff --git a/doc/sphinx b/doc/sphinx
deleted file mode 160000
index aab44c9f..00000000
--- a/doc/sphinx
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit aab44c9f1f42d93ab7cb38e1a31b3ea5b42dd274