diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 2346eb9fc..593ff97f4 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.11.9-11"
-export PIKA_PACKAGE_NAME="haskell-cryptohash"
+export PIKA_PACKAGE_VERSION="21.0.5~8ea-1"
+export PIKA_PACKAGE_NAME="openjdk-21"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"