diff --git a/pika-build-config/v3.sh b/pika-build-config/v3.sh
index 815ce9151..d7659eb2d 100644
--- a/pika-build-config/v3.sh
+++ b/pika-build-config/v3.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.2.1+dfsg-1"
-export PIKA_PACKAGE_NAME="morse2ascii"
+export PIKA_PACKAGE_VERSION="1:19.1.3-2"
+export PIKA_PACKAGE_NAME="llvm-toolchain-19"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b1"