diff --git a/pkgs/by-name/sl/slop/package.nix b/pkgs/by-name/sl/slop/package.nix
index 3233dfe822bf..7bf6fc1f0779 100644
--- a/pkgs/by-name/sl/slop/package.nix
+++ b/pkgs/by-name/sl/slop/package.nix
@@ -12,7 +12,7 @@
   libX11,
   libXext,
   libXrender,
-  icu,
+  icu74,
   libSM,
 }:
 
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     libX11
     libXext
     libXrender
-    icu
+    icu74
     libSM
   ];