diff --git a/.gitmodules b/.gitmodules
index 30c42111f..432d28c90 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "cpp-ethereum"]
 	path = cpp-ethereum
-	url = git@github.com:artemii235/cpp-ethereum.git
+	url = https://github.com/artemii235/cpp-ethereum.git
 	branch = develop
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ef437913e..43bac6ac0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.9)
+cmake_minimum_required(VERSION 3.5.1)
 include("cmake/HunterGate.cmake")
 HunterGate(
         URL "https://github.com/ruslo/hunter/archive/v0.19.173.tar.gz"