diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 979a37232..200bd837d 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="20240501-1"
-export PIKA_PACKAGE_NAME="libfsext"
+export PIKA_PACKAGE_VERSION="2.2.1+dfsg-1"
+export PIKA_PACKAGE_NAME="iperf"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"