diff --git a/pika-build-config/i386.sh b/pika-build-config/i386.sh
index b28e81f14..9d8e7a1e9 100755
--- a/pika-build-config/i386.sh
+++ b/pika-build-config/i386.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1:17.0.6-17"
-export PIKA_PACKAGE_NAME="llvm-toolchain-17"
+export PIKA_PACKAGE_VERSION="1:18.1.8-11"
+export PIKA_PACKAGE_NAME="llvm-toolchain-18"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"