diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 0.1.1.3
+
+- Support Servant's `Header'` as well as `Header`
+
 # 0.1.1.2
 
 - Relax version bounds to encompass `text-2.0.x`, `base-4.16.x` and `template-haskell-2.18.x`
diff --git a/nri-test-encoding.cabal b/nri-test-encoding.cabal
--- a/nri-test-encoding.cabal
+++ b/nri-test-encoding.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           nri-test-encoding
-version:        0.1.1.2
+version:        0.1.1.3
 synopsis:       A library to simplify writing golden tests for encoding types.
 description:    Please see the README at <https://github.com/NoRedInk/haskell-libraries/tree/trunk/nri-test-encoding#readme>.
 category:       Testing
diff --git a/src/Test/Encoding/Routes.hs b/src/Test/Encoding/Routes.hs
--- a/src/Test/Encoding/Routes.hs
+++ b/src/Test/Encoding/Routes.hs
@@ -25,7 +25,7 @@
 import qualified Servant
 import Servant.API
   ( Capture',
-    Header,
+    Header',
     QueryFlag,
     Raw,
     ReqBody',
@@ -228,7 +228,7 @@
     Examples.HasExamples val,
     IsApi a
   ) =>
-  IsApi (Header key val :> a)
+  IsApi (Header' mods key val :> a)
   where
   crawl _ =
     crawl (Proxy :: Proxy a)