diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index ef17d1bc4..48410dc29 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="9.31+dfsg-1"
-export PIKA_PACKAGE_NAME="euslisp"
+export PIKA_PACKAGE_VERSION="1.4.4-12"
+export PIKA_PACKAGE_NAME="gworldclock"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"