diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 0f87d4351..9815b4362 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.7-1"
-export PIKA_PACKAGE_NAME="python-markdown"
+export PIKA_PACKAGE_VERSION="6.7.2+dfsg-2"
+export PIKA_PACKAGE_NAME="qt6-base"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"