diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 3eea9f13a..b28e81f14 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.2.5-4"
-export PIKA_PACKAGE_NAME="python-calmjs.parse"
+export PIKA_PACKAGE_VERSION="1:17.0.6-17"
+export PIKA_PACKAGE_NAME="llvm-toolchain-17"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"