diff --git a/hix.cabal b/hix.cabal
--- a/hix.cabal
+++ b/hix.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           hix
-version:        0.5.7
+version:        0.5.8
 synopsis:       Haskell/Nix development build tools
 description:    See https://hackage.haskell.org/package/hix/docs/Hix.html
 category:       Build
diff --git a/lib/Hix/Options.hs b/lib/Hix/Options.hs
--- a/lib/Hix/Options.hs
+++ b/lib/Hix/Options.hs
@@ -140,7 +140,9 @@
 data EnvRunnerCommandOptions =
   EnvRunnerCommandOptions {
     options :: EnvRunnerOptions,
-    test :: TestOptions
+    test :: TestOptions,
+    extraGhci :: Maybe ExtraGhciOptions,
+    extraGhcid :: Maybe ExtraGhcidOptions
   }
   deriving stock (Show, Generic)
 
@@ -284,6 +286,8 @@
     component <- optional targetSpecParser
     pure EnvRunnerOptions {..}
   test <- testOptionsParser
+  extraGhci <- extraGhciParser
+  extraGhcid <- extraGhcidParser
   pure EnvRunnerCommandOptions {..}
 
 ghciParser :: Parser GhciOptions