diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 10100a59d..c94d41986 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.5.17-1"
-export PIKA_PACKAGE_NAME="rpy2"
+export PIKA_PACKAGE_VERSION="0.5.1+dfsg-1.1"
+export PIKA_PACKAGE_NAME="unicycler"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"