diff --git a/defun-core.cabal b/defun-core.cabal
--- a/defun-core.cabal
+++ b/defun-core.cabal
@@ -1,6 +1,6 @@
 cabal-version:   2.4
 name:            defun-core
-version:         0.1
+version:         0.1.0.1
 license:         BSD-3-Clause
 license-file:    LICENSE
 author:          Oleg Grenrus <oleg.grenrus@iki.fi>
@@ -8,7 +8,14 @@
 category:        Data
 build-type:      Simple
 extra-doc-files: CHANGELOG.md
-tested-with:     GHC ==9.2.8 || ==9.4.8 || ==9.6.3 || ==9.8.1
+tested-with:
+  GHC ==9.2.8
+   || ==9.4.8
+   || ==9.6.7
+   || ==9.8.4
+   || ==9.10.1
+   || ==9.12.2
+
 synopsis:        Defunctionalization helpers: core definitions
 description:
   The package @defun@ provides defunctionalization helpers, most importantly
@@ -59,7 +66,7 @@
     DeFun.List
 
   build-depends:
-    , base            ^>=4.16.3.0 || ^>=4.17.2.0 || ^>=4.18.0.0 || ^>=4.19.0.0
+    base ^>=4.16.3.0 || ^>=4.17.2.0 || ^>=4.18.0.0 || ^>=4.19.0.0 || ^>=4.20.0.0 || ^>=4.21.0.0
 
   x-docspec-extra-packages: defun singleton-bool sop-core
-  x-docspec-options:        -XDataKinds -XGADTs -XStandaloneDeriving
+  x-docspec-options:        -XDataKinds -XGADTs -XStandaloneDeriving -XKindSignatures