diff --git a/pika-build-config/amd64.sh b/pika-build-config/amd64.sh
index fb7c8ff68..0e6d4f4b9 100644
--- a/pika-build-config/amd64.sh
+++ b/pika-build-config/amd64.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="4:24.08.0-4"
-export PIKA_PACKAGE_NAME="dolphin"
+export PIKA_PACKAGE_VERSION="1:19.1.2-1"
+export PIKA_PACKAGE_NAME="llvm-toolchain-19"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b2"