diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index a018755de..b5ef129dc 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="4.2-1"
-export PIKA_PACKAGE_NAME="haskell-copilot-libraries"
+export PIKA_PACKAGE_VERSION="1.9.0-1"
+export PIKA_PACKAGE_NAME="poetry-plugin-export"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"