diff --git a/Library/Homebrew/brew.sh b/Library/Homebrew/brew.sh
index 2cd1677a0e..c37e0c03e5 100644
--- a/Library/Homebrew/brew.sh
+++ b/Library/Homebrew/brew.sh
@@ -420,6 +420,7 @@ update-preinstall() {
   [[ -z "$HOMEBREW_UPDATE_PREINSTALL" ]] || return
 
   if [[ "$HOMEBREW_COMMAND" = "install" || "$HOMEBREW_COMMAND" = "upgrade" ||
+        "$HOMEBREW_COMMAND" = "bump-formula-pr" ||
         "$HOMEBREW_COMMAND" = "tap" && $HOMEBREW_ARG_COUNT -gt 1 ||
         "$HOMEBREW_CASK_COMMAND" = "install" || "$HOMEBREW_CASK_COMMAND" = "upgrade" ]]
   then
diff --git a/Library/Homebrew/dev-cmd/bump-formula-pr.rb b/Library/Homebrew/dev-cmd/bump-formula-pr.rb
index 36c177897f..d9f81e6f85 100644
--- a/Library/Homebrew/dev-cmd/bump-formula-pr.rb
+++ b/Library/Homebrew/dev-cmd/bump-formula-pr.rb
@@ -166,12 +166,6 @@ module Homebrew
       end
     end
 
-    if args.dry_run?
-      ohai "brew update"
-    else
-      safe_system "brew", "update"
-    end
-
     old_formula_version = formula_version(formula, requested_spec)
 
     replacement_pairs = []