diff --git a/BUILDING.md b/BUILDING.md
index fdd2f99f2127df..a00b00a5f8bc44 100644
--- a/BUILDING.md
+++ b/BUILDING.md
@@ -35,7 +35,7 @@ Support is divided into three tiers:
 
 |  System      | Support type | Version                          | Architectures        | Notes            |
 |--------------|--------------|----------------------------------|----------------------|------------------|
-| GNU/Linux    | Tier 1       | kernel >= 2.6.18, glibc >= 2.5   | x86, x64, arm, arm64 |                  |
+| GNU/Linux    | Tier 1       | kernel >= 2.6.32, glibc >= 2.12  | x86, x64, arm, arm64 |                  |
 | macOS        | Tier 1       | >= 10.10                         | x64                  |                  |
 | Windows      | Tier 1       | >= Windows 7 / 2008 R2           | x86, x64             | vs2015 or vs2017 |
 | SmartOS      | Tier 2       | >= 15 < 16.4                     | x86, x64             | see note1        |