diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 9ab2af5f1..ad83d7954 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="21.0.2+dfsg-1"
-export PIKA_PACKAGE_NAME="rust-wasmtime"
+export PIKA_PACKAGE_VERSION="0.8.2.1+dfsg2-2"
+export PIKA_PACKAGE_NAME="kalkun"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"