diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index c67a4618c..f8626309f 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.6.12+dfsg-1"
-export PIKA_PACKAGE_NAME="jexcelapi"
+export PIKA_PACKAGE_VERSION="5.10.1-1"
+export PIKA_PACKAGE_NAME="swiftlang"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"