diff --git a/BUILD.md b/BUILD.md
index 026298a..5fc7075 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -391,8 +391,8 @@
 ### Linux Development Environment Requirements
 
 This repository has been built and tested on the two most recent Ubuntu LTS
-versions. Currently, the oldest supported version is Ubuntu 14.04, meaning
-that the minimum supported compiler versions are GCC 4.8.2 and Clang 3.4,
+versions. Currently, the oldest supported version is Ubuntu 16.04, meaning
+that the minimum officially supported C++11 compiler version is GCC 5.4.0,
 although earlier versions may work. It should be straightforward to adapt this
 repository to other Linux distributions.