diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,5 @@
+# Changelog
+
+## Version 0.2.6.0
+
++ Fixes compilation failure with ghc-9.0.2 or newer (see https://github.com/bobjflong/yesod-csp/issues/8)
diff --git a/src/Yesod/Csp.hs b/src/Yesod/Csp.hs
--- a/src/Yesod/Csp.hs
+++ b/src/Yesod/Csp.hs
@@ -21,7 +21,7 @@
 import qualified Data.CaseInsensitive as CI
 import           Data.Data          (Data)
 import           Data.List.NonEmpty
-import           Data.Text
+import           Data.Text          (Text)
 import qualified Data.Text          as T
 import qualified Data.Text.Encoding as TE
 import           Data.Typeable      (Typeable)
@@ -82,7 +82,7 @@
 
 -- | Escapes ';' '\'' and ' ', and parses to URI
 escapeAndParseURI :: Text -> Maybe EscapedURI
-escapeAndParseURI = fmap EscapedURI . parseURI . escapeURIString notEscapable . unpack
+escapeAndParseURI = fmap EscapedURI . parseURI . escapeURIString notEscapable . T.unpack
 
 -- | Escapes Text to be a valid nonce value
 escapedTextForNonce :: String -> EscapedText
@@ -90,10 +90,10 @@
 
 -- | Escapes a Text value, returning a valid Nonce
 nonce :: Text -> Source
-nonce = Nonce . escapedTextForNonce . unpack
+nonce = Nonce . escapedTextForNonce . T.unpack
 
 directiveListToHeader :: DirectiveList -> Text
-directiveListToHeader = intercalate "; " . fmap textDirective
+directiveListToHeader = T.intercalate "; " . fmap textDirective
 
 w :: Text -> SourceList -> Text
 w = wrap
@@ -132,13 +132,13 @@
 textSource None = "'none'"
 textSource Self = "'self'"
 textSource DataScheme = "data:"
-textSource (Host x) = (pack . show) x
+textSource (Host x) = (T.pack . show) x
 textSource Https = "https:"
 textSource UnsafeInline = "'unsafe-inline'"
 textSource UnsafeEval = "'unsafe-eval'"
 textSource StrictDynamic = "'strict-dynamic'"
 textSource (MetaSource _) = ""
-textSource (Nonce x) = (pack . show) x
+textSource (Nonce x) = (T.pack . show) x
 
 -- | A list of restrictions to apply.
 type DirectiveList = [Directive]
@@ -176,7 +176,7 @@
 textDirective (MediaSrc x) =  w "media-src" x
 textDirective (FrameSrc x) =  w "frame-src" x
 textDirective (FrameAncestors x) =  w "frame-ancestors" x
-textDirective (ReportUri t) = mconcat ["report-uri ", (pack . show) t]
+textDirective (ReportUri t) = mconcat ["report-uri ", (T.pack . show) t]
 textDirective (Sandbox []) = "sandbox"
 textDirective (Sandbox s) = mconcat ["sandbox ", T.unwords . fmap textSandbox $ s]
   where textSandbox AllowForms = "allow-forms"
diff --git a/yesod-csp.cabal b/yesod-csp.cabal
--- a/yesod-csp.cabal
+++ b/yesod-csp.cabal
@@ -2,20 +2,21 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                yesod-csp
-version:             0.2.5.0
+version:             0.2.6.0
 synopsis:            Add CSP headers to Yesod apps
 description:         Add CSP headers to Yesod apps. This helps reduce exposure to XSS attacks and bad assets.
 license:             MIT
 license-file:        LICENSE
 author:              Bob Long
-maintainer:          robertjflong@gmail.com
+maintainer:          Pascal Wittmann <mail@pascal-wittmann.de>
 category:            Web
 build-type:          Simple
 cabal-version:       >=1.10
+extra-source-files:  ./CHANGELOG.md
 
 source-repository head
   type: git
-  location: https://github.com/bobjflong/yesod-csp.git
+  location: https://github.com/pSub/yesod-csp.git
 
 library
   exposed-modules:     Yesod.Csp
@@ -23,17 +24,17 @@
                        , Yesod.Csp.TH
   -- other-extensions:
   build-depends:       base < 5
-                       , text
-                       , yesod-core
-                       , semigroups
-                       , network-uri
-                       , yesod
-                       , mono-traversable
-                       , attoparsec
-                       , template-haskell
-                       , syb
-                       , wai
-                       , case-insensitive
+                       , text >= 2.0.2 && < 2.2
+                       , yesod-core >= 1.6.25 && < 1.7
+                       , semigroups >= 0.20 && < 0.21
+                       , network-uri >= 2.6.4 && < 2.7
+                       , yesod >= 1.6.2 && < 1.7
+                       , mono-traversable >= 1.0.15 && < 1.1
+                       , attoparsec >= 0.14.4 && < 0.15
+                       , template-haskell >= 2.19.0 && < 2.22
+                       , syb >= 0.7.2 && < 0.8
+                       , wai >= 3.2.3 && < 3.3
+                       , case-insensitive >= 1.2.1 && < 1.3
   hs-source-dirs:      src
   default-language:    Haskell2010
   ghc-options:         -Wall