diff --git a/pkgs/by-name/co/cope/package.nix b/pkgs/by-name/co/cope/package.nix
index d1aed0b02c5b..4d556f53c0d7 100644
--- a/pkgs/by-name/co/cope/package.nix
+++ b/pkgs/by-name/co/cope/package.nix
@@ -19,7 +19,7 @@ perlPackages.buildPerlPackage {
   buildInputs = with perlPackages; [
     EnvPath
     FileShareDir
-    IOPty
+    IOTty
     IOStty
     ListMoreUtils
     RegexpCommon
diff --git a/pkgs/by-name/re/rex/package.nix b/pkgs/by-name/re/rex/package.nix
index 881a30c23f1b..d33789e9f37a 100644
--- a/pkgs/by-name/re/rex/package.nix
+++ b/pkgs/by-name/re/rex/package.nix
@@ -70,7 +70,7 @@ perlPackages.buildPerlPackage rec {
     FileLibMagic
     HashMerge
     HTTPMessage
-    IOPty
+    IOTty
     IOString
     JSONMaybeXS
     LWP