diff --git a/completions/bash/brew b/completions/bash/brew
index 46e2525846..8d2e13982f 100644
--- a/completions/bash/brew
+++ b/completions/bash/brew
@@ -124,6 +124,7 @@ _brew___cache() {
   case "${cur}" in
     -*)
       __brewcomp "
+      --HEAD
       --build-from-source
       --cask
       --debug
diff --git a/completions/fish/brew.fish b/completions/fish/brew.fish
index dfb938fe90..4fb3814382 100644
--- a/completions/fish/brew.fish
+++ b/completions/fish/brew.fish
@@ -200,6 +200,7 @@ end
 
 
 __fish_brew_complete_cmd '--cache' 'Display Homebrew\'s download cache'
+__fish_brew_complete_arg '--cache' -l HEAD -d 'Show the cache file used when building from HEAD'
 __fish_brew_complete_arg '--cache' -l build-from-source -d 'Show the cache file used when building from source'
 __fish_brew_complete_arg '--cache' -l cask -d 'Only show cache files for casks'
 __fish_brew_complete_arg '--cache' -l debug -d 'Display any debugging information'
diff --git a/completions/zsh/_brew b/completions/zsh/_brew
index 0d52f0b72a..fa18b7298a 100644
--- a/completions/zsh/_brew
+++ b/completions/zsh/_brew
@@ -252,9 +252,10 @@ __brew_diagnostic_checks() {
 # brew --cache
 _brew___cache() {
   _arguments \
-    '(--force-bottle --cask)--build-from-source[Show the cache file used when building from source]' \
+    '(--build-from-source --force-bottle --cask)--HEAD[Show the cache file used when building from HEAD]' \
+    '(--force-bottle --HEAD --cask)--build-from-source[Show the cache file used when building from source]' \
     '--debug[Display any debugging information]' \
-    '(--build-from-source --cask)--force-bottle[Show the cache file used when pouring a bottle]' \
+    '(--build-from-source --HEAD --cask)--force-bottle[Show the cache file used when pouring a bottle]' \
     '--help[Show this message]' \
     '--quiet[Make some output more quiet]' \
     '--verbose[Make some output more verbose]' \
@@ -262,7 +263,7 @@ _brew___cache() {
     '(--cask)--formula[Only show cache files for formulae]' \
     '*::formula:__brew_formulae' \
     - cask \
-    '(--build-from-source --force-bottle --formula)--cask[Only show cache files for casks]' \
+    '(--build-from-source --force-bottle --HEAD --formula)--cask[Only show cache files for casks]' \
     '*::cask:__brew_casks'
 }
 
diff --git a/docs/Manpage.md b/docs/Manpage.md
index 3b1800dbbe..12b9f20c17 100644
--- a/docs/Manpage.md
+++ b/docs/Manpage.md
@@ -747,6 +747,8 @@ If *`formula`* is provided, display the file or directory used to cache *`formul
   Show the cache file used when building from source.
 * `--force-bottle`:
   Show the cache file used when pouring a bottle.
+* `--HEAD`:
+  Show the cache file used when building from HEAD.
 * `--formula`:
   Only show cache files for formulae.
 * `--cask`:
diff --git a/manpages/brew.1 b/manpages/brew.1
index ff3866b675..3586e59ecf 100644
--- a/manpages/brew.1
+++ b/manpages/brew.1
@@ -1037,6 +1037,10 @@ Show the cache file used when building from source\.
 Show the cache file used when pouring a bottle\.
 .
 .TP
+\fB\-\-HEAD\fR
+Show the cache file used when building from HEAD\.
+.
+.TP
 \fB\-\-formula\fR
 Only show cache files for formulae\.
 .