diff --git a/Library/Homebrew/dev-cmd/bottle.rb b/Library/Homebrew/dev-cmd/bottle.rb
index d62fc83069..eee9f31c5b 100644
--- a/Library/Homebrew/dev-cmd/bottle.rb
+++ b/Library/Homebrew/dev-cmd/bottle.rb
@@ -254,7 +254,6 @@ module Homebrew
     tar_path = Pathname.pwd/tar_filename
 
     prefix = HOMEBREW_PREFIX.to_s
-    repository = HOMEBREW_REPOSITORY.to_s
     cellar = HOMEBREW_CELLAR.to_s
 
     ohai "Bottling #{filename}..."
@@ -326,13 +325,24 @@ module Homebrew
           ignores << %r{#{Regexp.escape(HOMEBREW_CELLAR)}/#{go_regex}/[\d.]+/libexec}
         end
 
+        repository_reference = if HOMEBREW_PREFIX == HOMEBREW_REPOSITORY
+          HOMEBREW_LIBRARY
+        else
+          HOMEBREW_REPOSITORY
+        end.to_s
+        if keg_contain?(repository_reference, keg, ignores, args: args)
+          odie "Bottle contains non-relocatable reference to #{repository_reference}!"
+        end
+
         relocatable = true
         if args.skip_relocation?
           skip_relocation = true
         else
           relocatable = false if keg_contain?(prefix_check, keg, ignores, formula_and_runtime_deps_names, args: args)
-          relocatable = false if keg_contain?(repository, keg, ignores, args: args)
           relocatable = false if keg_contain?(cellar, keg, ignores, formula_and_runtime_deps_names, args: args)
+          if keg_contain?(HOMEBREW_LIBRARY.to_s, keg, ignores, formula_and_runtime_deps_names, args: args)
+            relocatable = false
+          end
           if prefix != prefix_check
             relocatable = false if keg_contain_absolute_symlink_starting_with?(prefix, keg, args: args)
             relocatable = false if keg_contain?("#{prefix}/etc", keg, ignores, args: args)
diff --git a/Library/Homebrew/formula_cellar_checks.rb b/Library/Homebrew/formula_cellar_checks.rb
index cd568a8466..f896caaf47 100644
--- a/Library/Homebrew/formula_cellar_checks.rb
+++ b/Library/Homebrew/formula_cellar_checks.rb
@@ -7,10 +7,6 @@ require "utils/shell"
 #
 # @api private
 module FormulaCellarChecks
-  # If the location of HOMEBREW_LIBRARY changes
-  # keg_relocate.rb, test/global_spec.rb, and this constant need to change.
-  REPOSITORY_AND_NOT_LIBRARY_REGEX = %r{#{HOMEBREW_REPOSITORY}(?!/Library/)}.freeze
-
   def check_env_path(bin)
     # warn the user if stuff was installed outside of their PATH
     return unless bin.directory?
@@ -211,26 +207,6 @@ module FormulaCellarChecks
     EOS
   end
 
-  def check_repository_references(prefix)
-    return if HOMEBREW_PREFIX != HOMEBREW_REPOSITORY
-    return unless prefix.directory?
-
-    keg = Keg.new(prefix)
-
-    matches = []
-    keg.each_unique_file_matching(HOMEBREW_REPOSITORY) do |f|
-      matches << f.relative_path_from(keg.to_path) if f.read.match? REPOSITORY_AND_NOT_LIBRARY_REGEX
-    end
-
-    return if matches.empty?
-
-    <<~EOS
-      Files were found with references to the Homebrew repository directory
-      that are outside of the Library directory. The offending files are:
-        #{matches * "\n  "}
-    EOS
-  end
-
   def check_shim_references(prefix)
     return unless prefix.directory?
 
@@ -316,7 +292,6 @@ module FormulaCellarChecks
     problem_if_output(check_elisp_dirname(formula.share, formula.name))
     problem_if_output(check_elisp_root(formula.share, formula.name))
     problem_if_output(check_python_packages(formula.lib, formula.deps))
-    problem_if_output(check_repository_references(formula.prefix))
     problem_if_output(check_shim_references(formula.prefix))
     problem_if_output(check_plist(formula.prefix, formula.plist))
     problem_if_output(check_python_symlinks(formula.name, formula.keg_only?))
diff --git a/Library/Homebrew/formula_installer.rb b/Library/Homebrew/formula_installer.rb
index d7983462ca..5a3a38ff8e 100644
--- a/Library/Homebrew/formula_installer.rb
+++ b/Library/Homebrew/formula_installer.rb
@@ -175,6 +175,7 @@ class FormulaInstaller
 
     bottle = formula.bottle_specification
     unless bottle.compatible_locations?
+      # TODO: delete HOMEBREW_REPOSITORY reference after Homebrew 2.7.0 is released.
       if output_warning
         opoo <<~EOS
           Building #{formula.full_name} from source as the bottle needs:
diff --git a/Library/Homebrew/keg_relocate.rb b/Library/Homebrew/keg_relocate.rb
index a10ebe27b2..1456854222 100644
--- a/Library/Homebrew/keg_relocate.rb
+++ b/Library/Homebrew/keg_relocate.rb
@@ -5,13 +5,15 @@ class Keg
   PREFIX_PLACEHOLDER = "@@HOMEBREW_PREFIX@@"
   CELLAR_PLACEHOLDER = "@@HOMEBREW_CELLAR@@"
   REPOSITORY_PLACEHOLDER = "@@HOMEBREW_REPOSITORY@@"
+  LIBRARY_PLACEHOLDER = "@@HOMEBREW_LIBRARY@@"
 
-  # If the location of HOMEBREW_LIBRARY changes
-  # formula_cellar_checks.rb, test/global_spec.rb, and this constant need to change.
-  LIBRARY_PLACEHOLDER = "@@HOMEBREW_REPOSITORY@@/Library"
+  # TODO: delete this after Homebrew 2.7.0 is released.
+  REPOSITORY_LIBRARY_PLACEHOLDER = "#{REPOSITORY_PLACEHOLDER}/Library"
 
   Relocation = Struct.new(:old_prefix, :old_cellar, :old_repository, :old_library,
-                          :new_prefix, :new_cellar, :new_repository, :new_library) do
+                          :new_prefix, :new_cellar, :new_repository, :new_library,
+                          # TODO: delete these after Homebrew 2.7.0 is released.
+                          :old_repository_library, :new_repository_library) do
     # Use keyword args instead of positional args for initialization.
     def initialize(**kwargs)
       super(*members.map { |k| kwargs[k] })
@@ -43,12 +45,16 @@ class Keg
     relocation = Relocation.new(
       old_prefix:     HOMEBREW_PREFIX.to_s,
       old_cellar:     HOMEBREW_CELLAR.to_s,
-      old_repository: HOMEBREW_REPOSITORY.to_s,
-      old_library:    HOMEBREW_LIBRARY.to_s,
       new_prefix:     PREFIX_PLACEHOLDER,
       new_cellar:     CELLAR_PLACEHOLDER,
+      # TODO: delete these after Homebrew 2.7.0 is released.
+      old_library:    HOMEBREW_LIBRARY.to_s,
+      new_library:    REPOSITORY_LIBRARY_PLACEHOLDER,
+      old_repository: HOMEBREW_REPOSITORY.to_s,
       new_repository: REPOSITORY_PLACEHOLDER,
-      new_library:    LIBRARY_PLACEHOLDER,
+      # TODO: add these after Homebrew 2.7.0 is released.
+      # old_library:    HOMEBREW_LIBRARY.to_s,
+      # new_library:    LIBRARY_PLACEHOLDER,
     )
     relocate_dynamic_linkage(relocation)
     replace_text_in_files(relocation)
@@ -56,14 +62,17 @@ class Keg
 
   def replace_placeholders_with_locations(files, skip_linkage: false)
     relocation = Relocation.new(
-      old_prefix:     PREFIX_PLACEHOLDER,
-      old_cellar:     CELLAR_PLACEHOLDER,
-      old_repository: REPOSITORY_PLACEHOLDER,
-      old_library:    LIBRARY_PLACEHOLDER,
-      new_prefix:     HOMEBREW_PREFIX.to_s,
-      new_cellar:     HOMEBREW_CELLAR.to_s,
-      new_repository: HOMEBREW_REPOSITORY.to_s,
-      new_library:    HOMEBREW_LIBRARY.to_s,
+      old_prefix:             PREFIX_PLACEHOLDER,
+      old_cellar:             CELLAR_PLACEHOLDER,
+      old_repository:         REPOSITORY_PLACEHOLDER,
+      old_library:            LIBRARY_PLACEHOLDER,
+      new_prefix:             HOMEBREW_PREFIX.to_s,
+      new_cellar:             HOMEBREW_CELLAR.to_s,
+      new_repository:         HOMEBREW_REPOSITORY.to_s,
+      new_library:            HOMEBREW_LIBRARY.to_s,
+      # TODO: delete these after Homebrew 2.7.0 is released.
+      old_repository_library: REPOSITORY_LIBRARY_PLACEHOLDER,
+      new_repository_library: HOMEBREW_LIBRARY.to_s,
     )
     relocate_dynamic_linkage(relocation) unless skip_linkage
     replace_text_in_files(relocation, files: files)
@@ -77,16 +86,15 @@ class Keg
       s = first.open("rb", &:read)
 
       replacements = {
-        relocation.old_prefix => relocation.new_prefix,
-        relocation.old_cellar => relocation.new_cellar,
-      }
+        relocation.old_prefix             => relocation.new_prefix,
+        relocation.old_cellar             => relocation.new_cellar,
+        relocation.old_library            => relocation.new_library,
+        # TODO: delete this after Homebrew 2.7.0 is released.
+        relocation.old_repository_library => relocation.new_repository_library,
+      }.compact
       # when HOMEBREW_PREFIX == HOMEBREW_REPOSITORY we should use HOMEBREW_PREFIX for all relocations to avoid
       # being unable to differentiate between them.
-      if HOMEBREW_PREFIX == HOMEBREW_REPOSITORY
-        replacements[relocation.old_library] = relocation.new_library
-      else
-        replacements[relocation.old_repository] = relocation.new_repository
-      end
+      replacements[relocation.old_repository] = relocation.new_repository if HOMEBREW_PREFIX != HOMEBREW_REPOSITORY
       changed = s.gsub!(Regexp.union(replacements.keys.sort_by(&:length).reverse), replacements)
       next unless changed
 
diff --git a/Library/Homebrew/software_spec.rb b/Library/Homebrew/software_spec.rb
index a85287fab5..b5a5542a34 100644
--- a/Library/Homebrew/software_spec.rb
+++ b/Library/Homebrew/software_spec.rb
@@ -389,6 +389,7 @@ class BottleSpecification
     # Only check the repository matches if the prefix is the default.
     # This is because the bottle DSL does not allow setting a custom repository
     # but does allow setting a custom prefix.
+    # TODO: delete this after Homebrew 2.7.0 is released.
     compatible_repository = if Homebrew.default_prefix?(prefix)
       repository == HOMEBREW_REPOSITORY.to_s
     else
diff --git a/Library/Homebrew/test/global_spec.rb b/Library/Homebrew/test/global_spec.rb
index 644c32bd16..6c34ca8838 100644
--- a/Library/Homebrew/test/global_spec.rb
+++ b/Library/Homebrew/test/global_spec.rb
@@ -8,10 +8,4 @@ describe "brew", :integration_test do
       .and not_to_output.to_stderr
       .and be_a_success
   end
-
-  # If the location of HOMEBREW_LIBRARY changes
-  # keg_relocate.rb, formula_cellar_checks.rb, and this test need to change.
-  it "ensures that HOMEBREW_LIBRARY=HOMEBREW_REPOSITORY/Library" do
-    expect(HOMEBREW_LIBRARY.to_s).to eq("#{HOMEBREW_REPOSITORY}/Library")
-  end
 end