diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index be9fe8fc0..4377f01f4 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.21.2+dfsg1-2"
-export PIKA_PACKAGE_NAME="slepc"
+export PIKA_PACKAGE_VERSION="0.11.11.2-2"
+export PIKA_PACKAGE_NAME="haskell-yaml"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"