diff --git a/README.md b/README.md
index c46c7d4..a729afc 100644
--- a/README.md
+++ b/README.md
@@ -114,10 +114,10 @@ pyenv rehash
 tox
 ```
 
-  [credentials]: http://blogs.aws.amazon.com/security/post/Tx3D6U6WSFGOK2H/A-New-and-Standardized-Way-to-Manage-Credentials-in-the-AWS-SDKs
-  [best practices]: http://docs.aws.amazon.com/general/latest/gr/aws-access-keys-best-practices.html
-  [assume a role]: http://docs.aws.amazon.com/cli/latest/userguide/cli-roles.html
-  [temporary credentials]: http://docs.aws.amazon.com/STS/latest/UsingSTS/Welcome.html
-  [account number]: http://docs.aws.amazon.com/general/latest/gr/acct-identifiers.html
-  [requires MFA]: http://docs.aws.amazon.com/cli/latest/userguide/cli-roles.html#cli-roles-mfa
-  [AWS CLI guide]: http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html
+  [credentials]: https://blogs.aws.amazon.com/security/post/Tx3D6U6WSFGOK2H/A-New-and-Standardized-Way-to-Manage-Credentials-in-the-AWS-SDKs
+  [best practices]: https://docs.aws.amazon.com/general/latest/gr/aws-access-keys-best-practices.html
+  [assume a role]: https://docs.aws.amazon.com/cli/latest/userguide/cli-roles.html
+  [temporary credentials]: https://docs.aws.amazon.com/STS/latest/UsingSTS/Welcome.html
+  [account number]: https://docs.aws.amazon.com/general/latest/gr/acct-identifiers.html
+  [requires MFA]: https://docs.aws.amazon.com/cli/latest/userguide/cli-roles.html#cli-roles-mfa
+  [AWS CLI guide]: https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html
diff --git a/awsudo/config.py b/awsudo/config.py
index b042320..49175ea 100644
--- a/awsudo/config.py
+++ b/awsudo/config.py
@@ -29,8 +29,8 @@ def set(key, value):
         set('AWS_SECRET_ACCESS_KEY', creds.secret_key)
 
         # AWS_SESSION_TOKEN is the ostensibly the standard:
-        # http://blogs.aws.amazon.com/security/post/Tx3D6U6WSFGOK2H/A-New-and-Standardized-Way-to-Manage-Credentials-in-the-AWS-SDKs
-        # http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html#cli-environment
+        # https://blogs.aws.amazon.com/security/post/Tx3D6U6WSFGOK2H/A-New-and-Standardized-Way-to-Manage-Credentials-in-the-AWS-SDKs
+        # https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html#cli-environment
         set('AWS_SESSION_TOKEN', creds.token)
 
         # ...but boto expects AWS_SECURITY_TOKEN. Set both for compatibility.
diff --git a/awsudo/rotate.py b/awsudo/rotate.py
index 5e8bb2f..b580d61 100644
--- a/awsudo/rotate.py
+++ b/awsudo/rotate.py
@@ -8,7 +8,7 @@
 from boto.iam.connection import IAMConnection
 from boto.exception import BotoServerError
 
-ACCESS_KEY_DOCS = 'http://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html'
+ACCESS_KEY_DOCS = 'https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html'
 
 try:
     from configparser import RawConfigParser
@@ -50,7 +50,7 @@ def updateCredentials(self, keyId, secretKey):
         self._config.set(self.section, 'aws_secret_access_key', secretKey)
 
         os.umask(0o0066)
-        os.rename(self._filename, self._filename+'~')
+        os.rename(self._filename, self._filename + '~')
         with open(self._filename, 'w') as f:
             self._config.write(f)
 
@@ -130,9 +130,9 @@ def getUserName(iam):
 
 
 @retry(
-    stop_max_delay=60*1000,
+    stop_max_delay=60 * 1000,
     wait_exponential_multiplier=250,
-    wait_exponential_max=10*1000,
+    wait_exponential_max=10 * 1000,
     retry_on_exception=lambda e: isinstance(e, BotoServerError))
 def deactivateKey(iam, oldKey, userName):
     """Set the given key as inactive.