diff --git a/Dockerfile b/Dockerfile
index c3197f3..34a1687 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1 +1,2 @@
 FROM atdr.meo.ws/archiveteam/grab-base
+RUN luarocks install utf8
diff --git a/pipeline.py b/pipeline.py
index 8dc4986..f514f82 100644
--- a/pipeline.py
+++ b/pipeline.py
@@ -59,7 +59,7 @@ if not WGET_AT:
 #
 # Update this each time you make a non-cosmetic change.
 # It will be added to the WARC files and reported to the tracker.
-VERSION = '20230910.03'
+VERSION = '20230910.04'
 TRACKER_ID = 'reddit'
 TRACKER_HOST = 'legacy-api.arpa.li'
 MULTI_ITEM_SIZE = 100
diff --git a/reddit.lua b/reddit.lua
index 84f52fb..e2edce3 100644
--- a/reddit.lua
+++ b/reddit.lua
@@ -1,6 +1,7 @@
 local urlparse = require("socket.url")
 local http = require("socket.http")
 local cjson = require("cjson")
+local utf8 = require("utf8")
 
 local item_names = os.getenv('item_names')
 local item_dir = os.getenv('item_dir')
@@ -283,7 +284,7 @@ wget.callbacks.get_urls = function(file, url, is_css, iri)
       url_ = string.gsub(
         url_, "\\[uU]([0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F])",
         function (s)
-          return unicode_codepoint_as_utf8(tonumber(s, 16))
+          return utf8.char(tonumber(s, 16))
         end
       )
     end