diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 7436a6901..ff3c74b4c 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1:19.1.0~++rc3-1~exp1"
-export PIKA_PACKAGE_NAME="llvm-toolchain-19"
+export PIKA_PACKAGE_VERSION="6.10.6-1"
+export PIKA_PACKAGE_NAME="linux"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"