diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 49e99525b..ace0d9775 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.33.0-7"
-export PIKA_PACKAGE_NAME="swift"
+export PIKA_PACKAGE_VERSION="1.3.100+eclipse4.29-1"
+export PIKA_PACKAGE_NAME="equinox-p2"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"