diff --git a/pyproject.toml b/pyproject.toml
index fd3251b4..d7886385 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -123,8 +123,8 @@ clean = "rm -rf docs/_build"
 
 [tool.hatch.envs.lint]
 dependencies = [
-  "black>=23.3.0",
-  "ruff>=0.0.270",
+  "black>=23.9.1",
+  "ruff>=0.0.292",
 ]
 detached = true
 
diff --git a/src/bootstrap3/renderers.py b/src/bootstrap3/renderers.py
index 1dda58a7..55680988 100644
--- a/src/bootstrap3/renderers.py
+++ b/src/bootstrap3/renderers.py
@@ -382,20 +382,8 @@ def make_input_group(self, html):
         if (self.addon_before or self.addon_after) and isinstance(
             self.widget, (TextInput, NumberInput, EmailInput, URLInput, DateInput, Select, PasswordInput)
         ):
-            before = (
-                '<span class="{input_class}">{addon}</span>'.format(
-                    input_class=self.addon_before_class, addon=self.addon_before
-                )
-                if self.addon_before
-                else ""
-            )
-            after = (
-                '<span class="{input_class}">{addon}</span>'.format(
-                    input_class=self.addon_after_class, addon=self.addon_after
-                )
-                if self.addon_after
-                else ""
-            )
+            before = f'<span class="{self.addon_before_class}">{self.addon_before}</span>' if self.addon_before else ""
+            after = f'<span class="{self.addon_after_class}">{self.addon_after}</span>' if self.addon_after else ""
             html = f'<div class="input-group">{before}{html}{after}</div>'
         return html
 
diff --git a/tests/test_templatetags.py b/tests/test_templatetags.py
index a2a61830..65f76029 100644
--- a/tests/test_templatetags.py
+++ b/tests/test_templatetags.py
@@ -496,9 +496,7 @@ def assertFieldHasAddons(self, field):
         addon_after = "af"
 
         res = render_template_with_form(
-            '{{% bootstrap_field form.{} addon_before="{}"  addon_after="{}" %}}'.format(
-                field, addon_before, addon_after
-            )
+            f'{{% bootstrap_field form.{field} addon_before="{addon_before}"  addon_after="{addon_after}" %}}'
         )
 
         self.assertIn('class="input-group"', res)