diff --git a/.gitmodules b/.gitmodules
index 56e361873..d8e0ccfa6 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,3 @@
-[submodule "lib/sectorbuilder"]
-	path = lib/sectorbuilder
-	url = https://github.com/filecoin-project/go-sectorbuilder.git
 [submodule "extern/go-bls-sigs"]
 	path = extern/go-bls-sigs
 	url = https://github.com/filecoin-project/go-bls-sigs.git