diff --git a/Library/Homebrew/livecheck/livecheck.rb b/Library/Homebrew/livecheck/livecheck.rb
index 2775b319ed..2948cd871f 100644
--- a/Library/Homebrew/livecheck/livecheck.rb
+++ b/Library/Homebrew/livecheck/livecheck.rb
@@ -269,7 +269,7 @@ module Homebrew
         # comparison.
         current = if formula
           if formula.head_only?
-            formula.any_installed_version.version.commit
+            Version.new(formula.any_installed_version.version.commit)
           else
             T.must(formula.stable).version
           end
@@ -281,7 +281,7 @@ module Homebrew
         current = LivecheckVersion.create(formula_or_cask, current)
 
         latest = if formula&.head_only?
-          T.must(formula.head).downloader.fetch_last_commit
+          Version.new(T.must(formula.head).downloader.fetch_last_commit)
         else
           version_info = latest_version(
             formula_or_cask,