diff --git a/pkgs/development/libraries/libical/default.nix b/pkgs/development/libraries/libical/default.nix
index d3ee9581305c..9d5db75bb121 100644
--- a/pkgs/development/libraries/libical/default.nix
+++ b/pkgs/development/libraries/libical/default.nix
@@ -41,6 +41,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     cmake
+    icu
     ninja
     perl
     pkg-config