diff --git a/core/app/models/spree/store_credit.rb b/core/app/models/spree/store_credit.rb
index d85946a8d46..b13fee90dbe 100644
--- a/core/app/models/spree/store_credit.rb
+++ b/core/app/models/spree/store_credit.rb
@@ -150,7 +150,12 @@ def can_void?(payment)
   end
 
   def generate_authorization_code
-    "#{id}-SC-#{Time.current.utc.strftime('%Y%m%d%H%M%S%6N')}"
+    [
+      id,
+      'SC',
+      Time.current.utc.strftime('%Y%m%d%H%M%S%6N'),
+      SecureRandom.uuid
+    ].join('-')
   end
 
   def editable?
diff --git a/core/spec/models/spree/store_credit_spec.rb b/core/spec/models/spree/store_credit_spec.rb
index badc26750b6..3d2653b8114 100644
--- a/core/spec/models/spree/store_credit_spec.rb
+++ b/core/spec/models/spree/store_credit_spec.rb
@@ -897,4 +897,12 @@
       end
     end
   end
+
+  describe "#generate_authorization_code" do
+    it "doesn't rely on time for uniqueness" do
+      freeze_time do
+        expect(subject.generate_authorization_code).not_to eq(subject.generate_authorization_code)
+      end
+    end
+  end
 end