diff --git a/BUILDING.md b/BUILDING.md
index de50ddd53b8673..3276dd38626c7b 100644
--- a/BUILDING.md
+++ b/BUILDING.md
@@ -107,7 +107,7 @@ platforms. This is true regardless of entries in the table below.
 | Operating System | Architectures    | Versions                          | Support Type | Notes                                          |
 | ---------------- | ---------------- | --------------------------------- | ------------ | ---------------------------------------------- |
 | GNU/Linux        | x64              | kernel >= 4.18[^1], glibc >= 2.28 | Tier 1       | e.g. Ubuntu 20.04, Debian 10, RHEL 8           |
-| GNU/Linux        | x64              | kernel >= 3.10, musl >= 1.1.19    | Experimental | e.g. Alpine 3.8                                |
+| GNU/Linux        | x64              | kernel >= 6.12, musl >= 1.2.5     | Tier 2       | e.g. Alpine 3.21                               |
 | GNU/Linux        | x86              | kernel >= 3.10, glibc >= 2.17     | Experimental | Downgraded as of Node.js 10                    |
 | GNU/Linux        | arm64            | kernel >= 4.18[^1], glibc >= 2.28 | Tier 1       | e.g. Ubuntu 20.04, Debian 10, RHEL 8           |
 | GNU/Linux        | armv7            | kernel >= 4.18[^1], glibc >= 2.28 | Experimental | Downgraded as of Node.js 24                    |