diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index b5dc13620..8b8596bcd 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
 export PIKA_PACKAGE_VERSION="0.9.0-3"
-export PIKA_PACKAGE_NAME="rust-gtk4-sys"
+export PIKA_PACKAGE_NAME="rust-gsk4-sys"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"