diff --git a/benchrunner/benchrunner.cabal b/benchrunner/benchrunner.cabal
index 01e86b6..ac31755 100644
--- a/benchrunner/benchrunner.cabal
+++ b/benchrunner/benchrunner.cabal
@@ -1,4 +1,4 @@
-cabal-version:      2.2
+cabal-version:      3.0
 name:               benchrunner
 version:            0.1
 build-type:         Simple
@@ -32,9 +32,7 @@ executable benchrunner
     ghc-options:        -Wall -Wcompat
                         -threaded -rtsopts
                         -fdefer-typed-holes
-                        -O2 -optl -optl-lstdc++
-
-    extra-libraries: stdc++
+                        -O2 -optl -lstdc++
 
     c-sources:
                       csorts/insertionsort.c