diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index b0e426542..a28b23a8c 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.66.1-7"
-export PIKA_PACKAGE_NAME="rust-bindgen-cli"
+export PIKA_PACKAGE_VERSION="0.2.1.3-6"
+export PIKA_PACKAGE_NAME="haskell-microspec"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"