diff --git a/package.yaml b/package.yaml
index 8bc086184..d9a66af86 100644
--- a/package.yaml
+++ b/package.yaml
@@ -271,7 +271,7 @@ when:
       cpp-options: -DDEVELOPMENT
     else:
       ghc-options:
-        - -O0
+        - -O
         - -fllvm
         - +RTS -K0 -RTS
 data-files: