diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 4a65cbde1..9e5e63262 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.29.1-1"
-export PIKA_PACKAGE_NAME="python-cobra"
+export PIKA_PACKAGE_VERSION="0.2.15-1"
+export PIKA_PACKAGE_NAME="rust-datasize"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"