diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 476bb2481..bf403b03e 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.20+git20240209.8710add+dfsg-1"
-export PIKA_PACKAGE_NAME="muse-el"
+export PIKA_PACKAGE_VERSION="2.3.10-1"
+export PIKA_PACKAGE_NAME="r-cran-yaml"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"