diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index d7995fa9e..6aa125775 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.6.5-5"
-export PIKA_PACKAGE_NAME="spectral-cube"
+export PIKA_PACKAGE_VERSION="0.21.0-4"
+export PIKA_PACKAGE_NAME="gwcs"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"