diff --git a/.gitmodules b/.gitmodules
index ff4affd519c3cc791c3cfb8922c575b2dc4aeecd..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +0,0 @@
-[submodule "external/range-v3"]
-	path = external/range-v3
-	url = https://github.com/ericniebler/range-v3.git
diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
deleted file mode 100644
index c7c484845661b8d61259f71230391460c1b7e480..0000000000000000000000000000000000000000
--- a/external/CMakeLists.txt
+++ /dev/null
@@ -1 +0,0 @@
-add_subdirectory(range-v3)
diff --git a/external/range-v3 b/external/range-v3
deleted file mode 160000
index 0487cca29e352e8f16bbd91fda38e76e39a0ed28..0000000000000000000000000000000000000000
--- a/external/range-v3
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 0487cca29e352e8f16bbd91fda38e76e39a0ed28