diff --git a/pkgs/top-level/php-packages.nix b/pkgs/top-level/php-packages.nix
index 238fcd0dd8d7..7377f60da7d3 100644
--- a/pkgs/top-level/php-packages.nix
+++ b/pkgs/top-level/php-packages.nix
@@ -16,7 +16,7 @@
 , gettext
 , gmp
 , html-tidy
-, icu64
+, icu73
 , libffi
 , libiconv
 , libkrb5
@@ -443,7 +443,7 @@ in {
         }
         {
           name = "intl";
-          buildInputs = [ icu64 ];
+          buildInputs = [ icu73 ];
         }
         {
           name = "ldap";