diff --git a/README b/README
index 69a39a85..0bf3a71a 100644
--- a/README
+++ b/README
@@ -1,3 +1,3 @@
 A simple cross-platform C++ utility library.
 
-Supported compilers: >=clang-4.x, >=gcc7.x; specifically, we require c++17 features such as structured bindings which aren't present in older compilers. No attempt has been made to compile under MSVC.
+Supported compilers: >=clang-5.x, >=gcc7.x; specifically, we require c++17 features such as structured bindings which aren't present in older compilers. No attempt has been made to compile under MSVC.