diff --git a/boring.cabal b/boring.cabal
--- a/boring.cabal
+++ b/boring.cabal
@@ -1,6 +1,6 @@
 cabal-version:      2.2
 name:               boring
-version:            0.2.2
+version:            0.2.2.1
 synopsis:           Boring and Absurd types
 description:
   * @Boring@ types are isomorphic to @()@.
@@ -26,9 +26,11 @@
    || ==9.0.2
    || ==9.2.8
    || ==9.4.8
-   || ==9.6.5
-   || ==9.8.2
-   || ==9.10.1
+   || ==9.6.6
+   || ==9.8.4
+   || ==9.10.3
+   || ==9.12.2
+   || ==9.14.1
 
 source-repository head
   type:     git
@@ -47,8 +49,7 @@
 library
   exposed-modules:  Data.Boring
   build-depends:
-      base          >=4.12.0.0 && <4.21
-    , transformers  >=0.5.6.2  && <0.7
+      base          >=4.12.0.0 && <4.23
 
   if impl(ghc <7.6)
     build-depends: ghc-prim