diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 18256d6fa..7cbed5865 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.20.6-1"
-export PIKA_PACKAGE_NAME="rust-glib-sys"
+export PIKA_PACKAGE_VERSION="1:2.8.11-1"
+export PIKA_PACKAGE_NAME="tclthread"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"