diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,12 @@
 
 ## [Unreleased]
 
+## [1.1.2.1] - 2026-05-25
+
+### Added
+
+- GHC 9.12.3 and 9.12.4 support
+
 ## [1.1.2.0] - 2026-05-25
 
 ### Added
diff --git a/himari.cabal b/himari.cabal
--- a/himari.cabal
+++ b/himari.cabal
@@ -1,6 +1,6 @@
 cabal-version: 3.12
 name: himari
-version: 1.1.2.0
+version: 1.1.2.1
 synopsis: A standard library for Haskell as an alternative to rio
 description:
   A standard library for Haskell inspired by rio.
@@ -30,6 +30,8 @@
   ghc ==9.10.2
   ghc ==9.10.3
   ghc ==9.12.2
+  ghc ==9.12.3
+  ghc ==9.12.4
   ghc ==9.14.1
 
 source-repository head
@@ -158,9 +160,6 @@
     QuickCheck ^>=2.15.0.1,
     himari,
     sydtest >=0.18.0.0 && <0.24,
-
-  build-tool-depends:
-    hlint:hlint ^>=3.10
 
 executable anomaly-monitor
   import: basic