diff --git a/lib/hanami/cli/commands/gem/new.rb b/lib/hanami/cli/commands/gem/new.rb
index 3dd1f4f0..81187e5f 100644
--- a/lib/hanami/cli/commands/gem/new.rb
+++ b/lib/hanami/cli/commands/gem/new.rb
@@ -99,7 +99,12 @@ def call(app:, head: HEAD_DEFAULT, skip_install: SKIP_INSTALL_DEFAULT, skip_asse
 
                   unless skip_assets
                     out.puts "Running npm install..."
-                    system_call.call("npm", ["install"])
+                    system_call.call("npm", ["install"]).tap do |result|
+                      unless result.successful?
+                        puts "NPM ERROR:"
+                        puts result.err.lines.map {|line| line.prepend("    ")}
+                      end
+                    end
                   end
 
                   out.puts "Running Hanami install..."