diff --git a/.gitmodules b/.gitmodules
index 3f51bf5cb..dbaa50b4f 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -6,7 +6,7 @@
 	url = https://github.com/openrisc/mor1kx.git
 [submodule "litex/soc/software/compiler_rt"]
 	path = litex/soc/software/compiler_rt
-	url = http://llvm.org/git/compiler-rt.git
+	url = https://git.llvm.org/git/compiler-rt
 [submodule "litex/soc/cores/cpu/picorv32/verilog"]
 	path = litex/soc/cores/cpu/picorv32/verilog
 	url = https://github.com/cliffordwolf/picorv32