diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index dda2c041e..5277a126b 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.58b-3"
-export PIKA_PACKAGE_NAME="chkrootkit"
+export PIKA_PACKAGE_VERSION="13"
+export PIKA_PACKAGE_NAME="gcc-riscv64-unknown-elf"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"