diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index ca45b730d..6d9fdb651 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.8.3-2"
-export PIKA_PACKAGE_NAME="haskell-pantry"
+export PIKA_PACKAGE_VERSION="20.26.6+ds-1"
+export PIKA_PACKAGE_NAME="python-virtualenv"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"