diff --git a/ci/release/_install.sh b/ci/release/_install.sh
index 6428f432b..fc3d716f6 100755
--- a/ci/release/_install.sh
+++ b/ci/release/_install.sh
@@ -348,6 +348,7 @@ install_d2_standalone() {
 install_d2_brew() {
   header "installing d2 with homebrew"
   sh_c brew tap terrastruct/d2
+  sh_c brew update
   sh_c brew install d2
 }
 
@@ -502,11 +503,6 @@ fetch_gh() {
   sh_c mv "$file.inprogress" "$file"
 }
 
-brew() {
-  # Makes brew sane.
-  HOMEBREW_NO_INSTALL_CLEANUP=1 HOMEBREW_NO_AUTO_UPDATE=1 command brew "$@"
-}
-
 # The main function does more than provide organization. It provides robustness in that if
 # the install script was to only partial download into sh, sh will not execute it because
 # main is not invoked until the very last byte.
diff --git a/install.sh b/install.sh
index 07425ca70..103ae05cd 100755
--- a/install.sh
+++ b/install.sh
@@ -931,6 +931,7 @@ install_d2_standalone() {
 install_d2_brew() {
   header "installing d2 with homebrew"
   sh_c brew tap terrastruct/d2
+  sh_c brew update
   sh_c brew install d2
 }
 
@@ -1085,11 +1086,6 @@ fetch_gh() {
   sh_c mv "$file.inprogress" "$file"
 }
 
-brew() {
-  # Makes brew sane.
-  HOMEBREW_NO_INSTALL_CLEANUP=1 HOMEBREW_NO_AUTO_UPDATE=1 command brew "$@"
-}
-
 # The main function does more than provide organization. It provides robustness in that if
 # the install script was to only partial download into sh, sh will not execute it because
 # main is not invoked until the very last byte.