diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 21ef6e400..7c2c05797 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.12.9-8"
-export PIKA_PACKAGE_NAME="rust-reqwest"
+export PIKA_PACKAGE_VERSION="4.1-1"
+export PIKA_PACKAGE_NAME="re2c"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"