diff --git a/pkgs/by-name/cf/cfn-nag/package.nix b/pkgs/by-name/cf/cfn-nag/package.nix
index 71c198c9a9b7..b5f7cd01298a 100644
--- a/pkgs/by-name/cf/cfn-nag/package.nix
+++ b/pkgs/by-name/cf/cfn-nag/package.nix
@@ -7,7 +7,6 @@
 
 bundlerEnv {
   pname = "cfn-nag";
-  version = "0.8.10";
 
   inherit ruby;
   gemdir = ./.;
diff --git a/pkgs/development/tools/compass/default.nix b/pkgs/development/tools/compass/default.nix
index cbf28b43f425..e09f5e9f3926 100644
--- a/pkgs/development/tools/compass/default.nix
+++ b/pkgs/development/tools/compass/default.nix
@@ -7,7 +7,6 @@
 
 bundlerEnv {
   pname = "compass";
-  version = "1.0.3";
 
   inherit ruby;
   gemdir = ./.;
diff --git a/pkgs/development/tools/license_finder/default.nix b/pkgs/development/tools/license_finder/default.nix
index 6eb7fe397a9c..2b3247c504df 100644
--- a/pkgs/development/tools/license_finder/default.nix
+++ b/pkgs/development/tools/license_finder/default.nix
@@ -7,7 +7,6 @@
 
 bundlerEnv {
   pname = "license_finder";
-  version = "7.0.1";
 
   inherit ruby;
   gemdir = ./.;