diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index cd632f52d..374271257 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="8.1.0-1"
-export PIKA_PACKAGE_NAME="elementary-icon-theme"
+export PIKA_PACKAGE_VERSION="0.3.7-2"
+export PIKA_PACKAGE_NAME="rust-primal-sieve"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"