diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 1452a771e..1a26fce4c 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2023.12.0-1"
-export PIKA_PACKAGE_NAME="pyiqvia"
+export PIKA_PACKAGE_VERSION="2021.10.0-1"
+export PIKA_PACKAGE_NAME="ipp-crypto"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"