diff --git a/flake.lock b/flake.lock
index f1cf1fa..6df7dfd 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "flake-utils": {
       "locked": {
-        "lastModified": 1623660459,
-        "narHash": "sha256-OTmOsh43po7r5F9s9H6lVCBQ2b0FikWbmiwLbMAGRdw=",
+        "lastModified": 1623875721,
+        "narHash": "sha256-A8BU7bjS5GirpAUv4QA+QnJ4CceLHkcXdRp4xITDB0s=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "98c8d36b1828009b20f12544214683c7489935a1",
+        "rev": "f7e004a55b120c02ecb6219596820fcd32ca8772",
         "type": "github"
       },
       "original": {
@@ -17,11 +17,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1623576761,
-        "narHash": "sha256-krXZQ0lObduC95f40K3JwIT//VIBpXBwVNclqh5njtE=",
+        "lastModified": 1627528535,
+        "narHash": "sha256-+E0LxCLav1GmbQbqwCKP39DRMn6NeEq00drC8udnYIY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "1f91fd1040667e9265a760b0347f8bc416249da7",
+        "rev": "2262d7863a6af007274a698367484bf4903a3299",
         "type": "github"
       },
       "original": {
diff --git a/haskell-overlay.nix b/haskell-overlay.nix
index c146220..8d1fbd7 100644
--- a/haskell-overlay.nix
+++ b/haskell-overlay.nix
@@ -18,6 +18,11 @@ final: prev:
         let
           hakyll-src = hpPrev.callHackage "hakyll" "4.14.0.0" {};
           pandoc-src = hpPrev.callHackage "pandoc" "2.11.4" {}; # version specified by hayll 4.14.0.0
+          slugger-src = hpPrev.callHackageDirect {
+            pkg = "slugger";
+            ver = "0.1.0.1";
+            sha256 = "sha256-ggeo5TcbI4UlK/CtG4878USX9Cm7Faz16phdjlDOGaI=";
+          } {}; # not available yet because it's so new
         in rec {
           hakyll = pipe hakyll-src [
             doJailbreak
@@ -31,6 +36,8 @@ final: prev:
             dontCheck
           ];
 
+          slugger = slugger-src;
+
           ssg = hpPrev.callCabal2nix "ssg" ./ssg {};
 
           website = prev.stdenv.mkDerivation {
diff --git a/ssg/src/Main.hs b/ssg/src/Main.hs
index 0ff0a3f..927c158 100644
--- a/ssg/src/Main.hs
+++ b/ssg/src/Main.hs
@@ -2,9 +2,9 @@
 
 import Control.Monad (forM_)
 import Data.Maybe (fromMaybe)
-import qualified Data.Text as T
 import Hakyll
-import Slug (toSlug)
+import qualified Data.Text as T
+import qualified Data.Text.Slugger as Slugger
 import Text.Pandoc
   ( Extension (Ext_fenced_code_attributes, Ext_footnotes, Ext_gfm_auto_identifiers, Ext_implicit_header_references, Ext_smart),
     Extensions,
@@ -229,7 +229,7 @@ getTitleFromMeta =
 
 fileNameFromTitle :: Metadata -> FilePath
 fileNameFromTitle =
-  T.unpack . (`T.append` ".html") . toSlug . T.pack . getTitleFromMeta
+  T.unpack . (`T.append` ".html") . Slugger.toSlug . T.pack . getTitleFromMeta
 
 titleRoute :: Metadata -> Routes
 titleRoute =
diff --git a/ssg/src/Slug.hs b/ssg/src/Slug.hs
deleted file mode 100644
index 08d2d79..0000000
--- a/ssg/src/Slug.hs
+++ /dev/null
@@ -1,22 +0,0 @@
-{-# LANGUAGE OverloadedStrings #-}
-
-module Slug
-  ( toSlug,
-  )
-where
-
-import Data.Char (isAlphaNum)
-import qualified Data.Text as T
-
-keepAlphaNum :: Char -> Char
-keepAlphaNum x
-  | isAlphaNum x = x
-  | otherwise = ' '
-
-clean :: T.Text -> T.Text
-clean =
-  T.map keepAlphaNum . T.replace "'" "" . T.replace "&" "and"
-
-toSlug :: T.Text -> T.Text
-toSlug =
-  T.intercalate (T.singleton '-') . T.words . T.toLower . clean
diff --git a/ssg/ssg.cabal b/ssg/ssg.cabal
index cbc48d9..ed6c19c 100644
--- a/ssg/ssg.cabal
+++ b/ssg/ssg.cabal
@@ -9,11 +9,10 @@ license-file:        LICENSE
 executable hakyll-site
   main-is:           Main.hs
   hs-source-dirs:    src
-  build-depends:     base == 4.*
-                   , hakyll ^>= 4.14
-                   , pandoc
-                   , text
-                   , time
-  other-modules:     Slug
+  build-depends:     base >= 4.8
+                   , hakyll >= 4.14
+                   , pandoc == 2.11.*
+                   , slugger >= 0.1.0.1
+                   , text >= 1.2
   ghc-options:       -Wall -threaded
   default-language:  Haskell2010