diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index ca1dd6e89..3a85d1e97 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.02+dfsg-4"
-export PIKA_PACKAGE_NAME="libxml-sax-perl"
+export PIKA_PACKAGE_VERSION="9.2.8+dfsg-2"
+export PIKA_PACKAGE_NAME="swi-prolog"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"