diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2020 digitally induced GmbH
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/Network/Wai/Middleware/AssetPath.hs b/Network/Wai/Middleware/AssetPath.hs
new file mode 100644
--- /dev/null
+++ b/Network/Wai/Middleware/AssetPath.hs
@@ -0,0 +1,63 @@
+module Network.Wai.Middleware.AssetPath
+( assetPathMiddleware
+, assetPathFromEnvMiddleware
+, assetPath
+, assetVersion
+) where
+
+import Prelude
+import qualified Data.Text as Text
+import Data.Text (Text)
+import Network.Wai
+import qualified Data.Vault.Lazy as Vault
+import System.IO.Unsafe (unsafePerformIO)
+import System.Environment
+
+-- | Middleware used for cache busting of static files
+-- You need to provide an asset version and optionally a base url.
+--
+-- The base url is useful if you use a CDN to host your static files
+assetPathMiddleware :: Text -> Maybe Text -> Middleware
+assetPathMiddleware assetVersion assetBaseUrl next req respond =
+    next req { vault = Vault.insert assetPathVaultKey (assetVersion, assetBaseUrl) req.vault } respond
+
+-- | Reads the asset version and base url from env variables.
+--
+-- > assetPathFromEnvMiddleware "IHP_ASSET_VERSION" "IHP_ASSET_BASEURL"
+--
+-- If the asset version env var is undefined, it will fallback to the static string @"dev"@
+--
+-- The base url env variable is optional.
+assetPathFromEnvMiddleware :: Text -> Text -> IO Middleware
+assetPathFromEnvMiddleware versionEnv baseUrlEnv = do
+    version <- maybe "dev" Text.pack <$> lookupEnv (Text.unpack versionEnv)
+    baseUrl <- fmap Text.pack <$> lookupEnv (Text.unpack baseUrlEnv)
+    pure (assetPathMiddleware version baseUrl)
+
+assetPathVaultKey :: Vault.Key (Text, Maybe Text)
+assetPathVaultKey = unsafePerformIO Vault.newKey
+{-# NOINLINE assetPathVaultKey #-}
+
+renderAssetPath :: Text -> Maybe Text -> Text -> Text
+renderAssetPath version Nothing path =
+    Text.concat [ "/static", path, "?v=", version ]
+renderAssetPath version (Just baseUrl) path =
+    Text.concat [ baseUrl, path, "?v=", version ]
+
+-- | Adds a cache buster to a asset path
+--
+-- >>> assetPath request "/keyhandlers.js"
+-- "/keyhandlers.js?v=9be8995c-7055-43d9-a1b2-43e05c210271"
+assetPath :: Request -> Text -> Text
+assetPath request path =
+    case Vault.lookup assetPathVaultKey request.vault of
+        Just (version, baseUrl) -> renderAssetPath version baseUrl path
+        Nothing -> path
+
+-- | Returns the assetVersion
+--
+-- >>> assetVersion request
+-- "9be8995c-7055-43d9-a1b2-43e05c210271"
+assetVersion :: Request -> Maybe Text
+assetVersion request =
+    fst <$> Vault.lookup assetPathVaultKey request.vault
diff --git a/wai-asset-path.cabal b/wai-asset-path.cabal
new file mode 100644
--- /dev/null
+++ b/wai-asset-path.cabal
@@ -0,0 +1,29 @@
+cabal-version:       2.2
+name:                wai-asset-path
+version:             1.0.0
+synopsis:            assetPath function for WAI
+description:         Asset versioning for static files in WAI
+license:             MIT
+license-file:        LICENSE
+author:              digitally induced GmbH
+maintainer:          support@digitallyinduced.com
+bug-reports:         https://github.com/digitallyinduced/ihp/issues
+category:            Web
+build-type:          Simple
+
+source-repository head
+    type:     git
+    location: https://github.com/digitallyinduced/ihp.git
+
+library
+    default-language: GHC2021
+    default-extensions:
+        OverloadedRecordDot
+        DuplicateRecordFields
+        DisambiguateRecordFields
+        BlockArguments
+        OverloadedStrings
+    ghc-options: -Werror=incomplete-patterns -Werror=unused-imports -Werror=missing-fields
+    build-depends: base >= 4.17.0 && < 4.22, text, wai, vault
+    hs-source-dirs: .
+    exposed-modules: Network.Wai.Middleware.AssetPath