diff --git a/cabal.project b/cabal.project
index c378fc10272..48605ced686 100644
--- a/cabal.project
+++ b/cabal.project
@@ -34,6 +34,9 @@ packages: ./cardano-ping
 tests: True
 benchmarks: True
 
+package bitvec
+  flags: -simd
+
 package cardano-ping
   flags: +asserts