diff --git a/cabal.project b/cabal.project
index f428568ab..818b0da02 100644
--- a/cabal.project
+++ b/cabal.project
@@ -20,7 +20,7 @@ packages:
   cardano-cli
 
 program-options
-  ghc-options: -Wno-deprecations
+  ghc-options: -Werror
 
 package cryptonite
   -- Using RDRAND instead of /dev/urandom as an entropy source for key