diff --git a/config/source.json b/config/source.json
index a7af224f..07298881 100644
--- a/config/source.json
+++ b/config/source.json
@@ -128,8 +128,9 @@
         }
     },
     "icu": {
-        "type": "url",
-        "url": "https://github.com/unicode-org/icu/releases/download/release-73-1/icu4c-73_1-src.tgz",
+        "type": "ghrel",
+        "repo": "unicode-org/icu",
+        "match": "icu4c.+-src\\.tgz",
         "license": {
             "type": "file",
             "path": "LICENSE"