diff --git a/pika-build-config/amd64.sh b/pika-build-config/amd64.sh
index 1d8fe582b..35d640153 100644
--- a/pika-build-config/amd64.sh
+++ b/pika-build-config/amd64.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="48~beta-1"
-export PIKA_PACKAGE_NAME="nautilus"
+export PIKA_PACKAGE_VERSION="1:20.1.0~+rc2-1~exp1"
+export PIKA_PACKAGE_NAME="llvm-toolchain-20"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b2"