diff --git a/build-llvm.sh b/build-llvm.sh
index 123681e6..2cf52cd8 100755
--- a/build-llvm.sh
+++ b/build-llvm.sh
@@ -16,7 +16,7 @@
 
 set -e
 
-: ${LLVM_VERSION:=llvmorg-19.1.0-rc3}
+: ${LLVM_VERSION:=llvmorg-19.1.0-rc4}
 ASSERTS=OFF
 unset HOST
 BUILDDIR="build"