diff --git a/cd/__main__.py b/cd/__main__.py
index d67667f..23bd676 100755
--- a/cd/__main__.py
+++ b/cd/__main__.py
@@ -6,13 +6,13 @@ import sys
 import cd
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     command, *arguments = sys.argv
     command = os.path.basename(command)
-    if command == '__main__.py':
+    if command == "__main__.py":
         cd.set_ssh(*arguments)
         cd.install_commands(__file__)
     else:
-        command = command.replace('-', '_')
+        command = command.replace("-", "_")
         function = getattr(cd, command)
         function(*arguments)
diff --git a/cd/project.py b/cd/project.py
index d5a96d7..3d2e813 100644
--- a/cd/project.py
+++ b/cd/project.py
@@ -1,16 +1,16 @@
 from os import path
 
 BRANCH = [
-    'GITHUB_REF_NAME',
-    'CI_COMMIT_BRANCH',
+    "GITHUB_REF_NAME",
+    "CI_COMMIT_BRANCH",
 ]
 NAME = [
-    'GITHUB_REPOSITORY',
-    'CI_PROJECT_PATH',
+    "GITHUB_REPOSITORY",
+    "CI_PROJECT_PATH",
 ]
 ROOT = [
-    'GITHUB_WORKSPACE',
-    'CI_PROJECT_DIR',
+    "GITHUB_WORKSPACE",
+    "CI_PROJECT_DIR",
 ]
 
 
diff --git a/cd/projects.py b/cd/projects.py
index 81fe3db..4144f6a 100644
--- a/cd/projects.py
+++ b/cd/projects.py
@@ -1,12 +1,12 @@
 from os import path
 
 GROUP_AND_NAME = [
-    'GITHUB_REPOSITORY',
-    'CI_PROJECT_PATH',
+    "GITHUB_REPOSITORY",
+    "CI_PROJECT_PATH",
 ]
 SERVER_URL = [
-    'GITHUB_SERVER_URL',
-    'CI_SERVER_URL',
+    "GITHUB_SERVER_URL",
+    "CI_SERVER_URL",
 ]