diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 9b50f6d0a..d110c0017 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.0.19-1"
-export PIKA_PACKAGE_NAME="r-cran-collapse"
+export PIKA_PACKAGE_VERSION="4.2-1"
+export PIKA_PACKAGE_NAME="haskell-copilot"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"