diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index d03141f5b..b843b6637 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.10.21-1"
-export PIKA_PACKAGE_NAME="haskell-concurrent-output"
+export PIKA_PACKAGE_VERSION="0.9.2.0-2"
+export PIKA_PACKAGE_NAME="haskell-clientsession"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"