diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 5a4067453..b18ad06bc 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.5.8-8"
-export PIKA_PACKAGE_NAME="libmcrypt"
+export PIKA_PACKAGE_VERSION="0.42-1"
+export PIKA_PACKAGE_NAME="libtickit-widgets-perl"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"