diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 933568376..1e6d02c5a 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="5.15.15-3"
-export PIKA_PACKAGE_NAME="qtserialbus-everywhere-src"
+export PIKA_PACKAGE_VERSION="5.2-1"
+export PIKA_PACKAGE_NAME="zope.exceptions"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"