diff --git a/ci_dir.py b/ci_dir.py
index 93b3d3d..b3a53d9 100755
--- a/ci_dir.py
+++ b/ci_dir.py
@@ -21,10 +21,10 @@
 cwd_bn = cwd.name
 
 # add './' prefix to cwd_bn
-rel = "./" + cwd_bn
+rel = f"./{cwd_bn}"
 
 # add 'CWD=' prefix to rel
-cwd_str = "CWD=" + rel
+cwd_str = f"CWD={rel}"
 
 # call git via subprocess to find name of repo
 abs = subprocess.check_output(["git", "rev-parse", "--show-toplevel"]).decode("utf-8").strip()
diff --git a/hooks/pre_gen_project.py b/hooks/pre_gen_project.py
index 444f732..8e9eb90 100755
--- a/hooks/pre_gen_project.py
+++ b/hooks/pre_gen_project.py
@@ -7,7 +7,9 @@
 module_name = "{{ cookiecutter.project_slug}}"
 
 if not re.match(MODULE_REGEX, module_name):
-    print("ERROR: The project slug (%s) is not a valid Python module name. Please do not use a - and use _ instead" % module_name)
+    print(
+        f"ERROR: The project slug ({module_name}) is not a valid Python module name. Please do not use a - and use _ instead"
+    )
 
     # Exit to cancel project
     sys.exit(1)
diff --git a/tests/test_bake_project.py b/tests/test_bake_project.py
index a3a7851..f6e8a92 100755
--- a/tests/test_bake_project.py
+++ b/tests/test_bake_project.py
@@ -89,7 +89,7 @@ def test_bake_and_run_tests(cookies):
     with bake_in_temp_dir(cookies) as result:
         assert result.project.isdir()
         run_inside_dir("python setup.py test", str(result.project)) == 0
-        print("test_bake_and_run_tests path", str(result.project))
+        print("test_bake_and_run_tests path", result.project)
 
 
 def test_bake_withspecialchars_and_run_tests(cookies):
diff --git a/{{cookiecutter.project_slug}}/{{cookiecutter.project_slug}}/cli.py b/{{cookiecutter.project_slug}}/{{cookiecutter.project_slug}}/cli.py
index 7cbc1e4..3835005 100755
--- a/{{cookiecutter.project_slug}}/{{cookiecutter.project_slug}}/cli.py
+++ b/{{cookiecutter.project_slug}}/{{cookiecutter.project_slug}}/cli.py
@@ -24,7 +24,7 @@ def main():
     parser.add_argument('_', nargs='*')
     args = parser.parse_args()
 
-    print("Arguments: " + str(args._))
+    print(f"Arguments: {str(args._)}")
     print("Replace this message by putting your code into "
           "{{cookiecutter.project_slug}}.cli.main")
     return 0