diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 26e136ceb..50f098188 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.4.6-1"
-export PIKA_PACKAGE_NAME="haskell-ghc-tcplugins-extra"
+export PIKA_PACKAGE_VERSION="0.2.0-3"
+export PIKA_PACKAGE_NAME="haskell-language-c99-util"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"