diff --git a/terraform/lib/dependabot/terraform/requirement.rb b/terraform/lib/dependabot/terraform/requirement.rb
index bfd29f77c1..13dcce0f56 100644
--- a/terraform/lib/dependabot/terraform/requirement.rb
+++ b/terraform/lib/dependabot/terraform/requirement.rb
@@ -10,8 +10,8 @@ class Requirement < Gem::Requirement
       # Override regex PATTERN from Gem::Requirement to add support for the
       # optional 'v' prefix to release tag names, which Terraform supports.
       # https://www.terraform.io/docs/registry/modules/publish.html#requirements
-      quoted = OPS.keys.map { |k| Regexp.quote k }.join "|"
-      PATTERN_RAW = "\\s*(#{quoted})?\\s*v?(#{Gem::Version::VERSION_PATTERN})\\s*"
+      OPERATORS = OPS.keys.map { |key| Regexp.quote(key) }.join("|").freeze
+      PATTERN_RAW = "\\s*(#{OPERATORS})?\\s*v?(#{Gem::Version::VERSION_PATTERN})\\s*"
       PATTERN = /\A#{PATTERN_RAW}\z/.freeze
 
       def self.parse(obj)