diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index b838fc68d..82fb683cf 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.24-4"
-export PIKA_PACKAGE_NAME="openturns"
+export PIKA_PACKAGE_VERSION="3c1-1"
+export PIKA_PACKAGE_NAME="slib"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"