diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index cc5673b77..3c009d1be 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.0~git20240626.61d1e34-1"
-export PIKA_PACKAGE_NAME="golang-github-alecthomas-units"
+export PIKA_PACKAGE_VERSION="1:17.0.6-18"
+export PIKA_PACKAGE_NAME="llvm-toolchain-17"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"