diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 04fb5964c..6e6d90724 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.0.6-2"
-export PIKA_PACKAGE_NAME="haskell-os-string"
+export PIKA_PACKAGE_VERSION="2.8.5+dfsg-1"
+export PIKA_PACKAGE_NAME="r-cran-magick"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"