diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index d526430e7..f3dec95db 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.3.4.0.2-1"
-export PIKA_PACKAGE_NAME="r-cran-rcppeigen"
+export PIKA_PACKAGE_VERSION="6.5.0-2"
+export PIKA_PACKAGE_NAME="kf6-sonnet"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"