diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 3.4
+* Require `text-show-3.4` or later
+* Update testsuite to be buildable with `text-show-3.4`
+
 ## 3.3
 * Add the `TextShow.GHC.LanguageExtensions.Type` and `TextShow.GHC.PackageDb` modules, which define instances if using `ghc-boot`
 * Add `TextShow` instances for `NameFlavour`, `NameSpace`, `PatSynArgs`, and `PatSynDir` in `TextShow.Language.Haskell.TH`
diff --git a/tests/Spec/Utils.hs b/tests/Spec/Utils.hs
--- a/tests/Spec/Utils.hs
+++ b/tests/Spec/Utils.hs
@@ -68,14 +68,14 @@
 
 -- | Verifies that a type's 'TextShow' instance coincides with the output produced
 -- by the equivalent 'Generic' functions.
-prop_genericTextShow :: (TextShow a, Generic a, GTextShow Zero (Rep a))
+prop_genericTextShow :: (TextShow a, Generic a, GTextShowB Zero (Rep a))
                      => Int -> a -> Bool
 prop_genericTextShow p x = showbPrec p x == genericShowbPrec p x
 
 -- | Verifies that a type's 'TextShow1' instance coincides with the output produced
 -- by the equivalent 'Generic1' functions.
 prop_genericTextShow1 :: ( TextShow1 f, Generic1 f
-                         , GTextShow One (Rep1 f), TextShow a
+                         , GTextShowB One (Rep1 f), TextShow a
                          )
                       => Int -> f a -> Bool
 prop_genericTextShow1 p x =
diff --git a/text-show-instances.cabal b/text-show-instances.cabal
--- a/text-show-instances.cabal
+++ b/text-show-instances.cabal
@@ -1,5 +1,5 @@
 name:                text-show-instances
-version:             3.3
+version:             3.4
 synopsis:            Additional instances for text-show
 description:         @text-show-instances@ is a supplemental library to @text-show@
                      that provides additional @Show@ instances for data types in
@@ -142,7 +142,7 @@
                      , tagged               >= 0.4.4  && < 1
                      , template-haskell     >= 2.5    && < 2.12
                      , text                 >= 0.11.1 && < 1.3
-                     , text-show            >= 3.3    && < 4
+                     , text-show            >= 3.4    && < 4
                      , time                 >= 0.1    && < 1.7
                      , transformers         >= 0.2.1  && < 0.6
                      , transformers-compat  >= 0.5    && < 1
@@ -252,7 +252,7 @@
                      , tagged               >= 0.4.4  && < 1
                      , template-haskell     >= 2.5    && < 2.12
                      , text                 >= 0.11.1 && < 1.3
-                     , text-show            >= 3.3    && < 4
+                     , text-show            >= 3.4    && < 4
                      , th-orphans           >= 0.13.2 && < 1
                      , time                 >= 0.1    && < 1.7
                      , transformers         >= 0.2.1  && < 0.6
@@ -261,7 +261,7 @@
                      , vector               >= 0.9    && < 0.12
                      , xhtml                >= 3000.2 && < 3000.3
   if !flag(developer)
-    build-depends:     text-show-instances  == 3.3
+    build-depends:     text-show-instances  == 3.4
 
   if flag(ghc-boot)
     build-depends:     ghc-boot