diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index d48f1d00f..5b3913126 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.17.3-2"
-export PIKA_PACKAGE_NAME="haskell-bytes"
+export PIKA_PACKAGE_VERSION="1.0.3-2"
+export PIKA_PACKAGE_NAME="rust-rustls-pemfile"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"