diff --git a/pika-build-config/amd64.sh b/pika-build-config/amd64.sh
index 88b6b5a08..d0f866b97 100644
--- a/pika-build-config/amd64.sh
+++ b/pika-build-config/amd64.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1:18.1.8-17"
-export PIKA_PACKAGE_NAME="llvm-toolchain-18"
+export PIKA_PACKAGE_VERSION="8.4.5-1"
+export PIKA_PACKAGE_NAME="php8.4"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b2"