diff --git a/Library/Contributions/manpages/brew.1.md b/Library/Contributions/manpages/brew.1.md
index 98ead6b09b..90d9ddf422 100644
--- a/Library/Contributions/manpages/brew.1.md
+++ b/Library/Contributions/manpages/brew.1.md
@@ -351,6 +351,9 @@ Note that these flags should only appear after a command.
     a bug report, you will likely be asked for this information if you do not
     provide it.
 
+  * `--env`:
+    Show a summary of the Homebrew build environment.
+
   * `--prefix`:
     Display Homebrew's install path. *Default:* `/usr/local`
 
diff --git a/share/man/man1/brew.1 b/share/man/man1/brew.1
index 848d446137..1103292803 100644
--- a/share/man/man1/brew.1
+++ b/share/man/man1/brew.1
@@ -387,6 +387,10 @@ Display the location in the cellar where \fIformula\fR would be installed, witho
 Show Homebrew and system configuration useful for debugging\. If you file a bug report, you will likely be asked for this information if you do not provide it\.
 .
 .TP
+\fB\-\-env\fR
+Show a summary of the Homebrew build environment\.
+.
+.TP
 \fB\-\-prefix\fR
 Display Homebrew\'s install path\. \fIDefault:\fR \fB/usr/local\fR
 .