diff --git a/docs/runtime/bunfig.md b/docs/runtime/bunfig.md
index 8a19be1ce510f5..f88d995bfeb321 100644
--- a/docs/runtime/bunfig.md
+++ b/docs/runtime/bunfig.md
@@ -335,6 +335,8 @@ dryRun = false
 
 To configure the directory where Bun puts globally installed packages.
 
+Environment variable: `BUN_INSTALL_GLOBAL_DIR`
+
 ```toml
 [install]
 # where `bun install --global` installs packages
@@ -345,6 +347,8 @@ globalDir = "~/.bun/install/global"
 
 To configure the directory where Bun installs globally installed binaries and CLIs.
 
+Environment variable: `BUN_INSTALL_BIN`
+
 ```toml
 # where globally-installed package bins are linked
 globalBinDir = "~/.bun/bin"