diff --git a/pre_commit/languages/ruby.py b/pre_commit/languages/ruby.py
index cb2a1827..ed33b5c9 100644
--- a/pre_commit/languages/ruby.py
+++ b/pre_commit/languages/ruby.py
@@ -15,7 +15,6 @@ from pre_commit.envcontext import UNSET
 from pre_commit.envcontext import Var
 from pre_commit.languages import helpers
 from pre_commit.prefix import Prefix
-from pre_commit.util import CalledProcessError
 from pre_commit.util import resource_bytesio
 
 ENVIRONMENT_DIR = 'rbenv'