diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,12 @@
 # Changelog
 All notable changes to the `align-equal` project will be documented in this file.
 
+## [1.0.1.2] - 2025-04-04
+
+### Added
+- Added a test case to ensure `adjustText` returns the input unchanged when there are no `=` characters in any line.
+- Improved test coverage to 100%.
+
 ## [1.0.1.1] - 2025-04-04
 
 ### Changed
diff --git a/align-equal.cabal b/align-equal.cabal
--- a/align-equal.cabal
+++ b/align-equal.cabal
@@ -1,6 +1,6 @@
 cabal-version: 3.0
 name: align-equal
-version: 1.0.1.1
+version: 1.0.1.2
 license: MIT
 license-file: LICENSE
 author: Joonkyu Park (based on original work by Gabriella Gonzalez)
diff --git a/test/Spec.hs b/test/Spec.hs
--- a/test/Spec.hs
+++ b/test/Spec.hs
@@ -43,3 +43,6 @@
 
     it "handles empty input correctly" $ do
       adjustText "" `shouldBe` ""
+
+    it "returns input unchanged when there are no '=' characters in any line" $ do
+      adjustText "foo\nbar\nbaz" `shouldBe` "foo\nbar\nbaz"