diff --git a/lms/envs/aws.py b/lms/envs/aws.py
index 6ee615b2ec..e00eef54c2 100644
--- a/lms/envs/aws.py
+++ b/lms/envs/aws.py
@@ -266,11 +266,11 @@ BULK_EMAIL_RETRY_DELAY_BETWEEN_SENDS = ENV_TOKENS.get(
 # We want Bulk Email running on the high-priority queue, so we define the
 # routing key that points to it. At the moment, the name is the same.
 # We have to reset the value here, since we have changed the value of the queue name.
-BULK_EMAIL_ROUTING_KEY = HIGH_PRIORITY_QUEUE
+BULK_EMAIL_ROUTING_KEY = ENV_TOKENS.get('BULK_EMAIL_ROUTING_KEY', HIGH_PRIORITY_QUEUE)
 
 # We can run smaller jobs on the low priority queue. See note above for why
 # we have to reset the value here.
-BULK_EMAIL_ROUTING_KEY_SMALL_JOBS = LOW_PRIORITY_QUEUE
+BULK_EMAIL_ROUTING_KEY_SMALL_JOBS = ENV_TOKENS.get('BULK_EMAIL_ROUTING_KEY_SMALL_JOBS', LOW_PRIORITY_QUEUE)
 
 # Queue to use for updating persistent grades
 RECALCULATE_GRADES_ROUTING_KEY = ENV_TOKENS.get('RECALCULATE_GRADES_ROUTING_KEY', LOW_PRIORITY_QUEUE)
@@ -358,8 +358,10 @@ if "TRACKING_IGNORE_URL_PATTERNS" in ENV_TOKENS:
 
 # SSL external authentication settings
 SSL_AUTH_EMAIL_DOMAIN = ENV_TOKENS.get("SSL_AUTH_EMAIL_DOMAIN", "MIT.EDU")
-SSL_AUTH_DN_FORMAT_STRING = ENV_TOKENS.get("SSL_AUTH_DN_FORMAT_STRING",
-                                           "/C=US/ST=Massachusetts/O=Massachusetts Institute of Technology/OU=Client CA v1/CN={0}/emailAddress={1}")
+SSL_AUTH_DN_FORMAT_STRING = ENV_TOKENS.get(
+    "SSL_AUTH_DN_FORMAT_STRING",
+    "/C=US/ST=Massachusetts/O=Massachusetts Institute of Technology/OU=Client CA v1/CN={0}/emailAddress={1}"
+)
 
 # Django CAS external authentication settings
 CAS_EXTRA_LOGIN_PARAMS = ENV_TOKENS.get("CAS_EXTRA_LOGIN_PARAMS", None)
@@ -605,7 +607,7 @@ TRACKING_SEGMENTIO_SOURCE_MAP = ENV_TOKENS.get("TRACKING_SEGMENTIO_SOURCE_MAP",
 VERIFY_STUDENT = AUTH_TOKENS.get("VERIFY_STUDENT", VERIFY_STUDENT)
 
 # Grades download
-GRADES_DOWNLOAD_ROUTING_KEY = HIGH_MEM_QUEUE
+GRADES_DOWNLOAD_ROUTING_KEY = ENV_TOKENS.get('GRADES_DOWNLOAD_ROUTING_KEY', HIGH_MEM_QUEUE)
 
 GRADES_DOWNLOAD = ENV_TOKENS.get("GRADES_DOWNLOAD", GRADES_DOWNLOAD)
 
@@ -863,7 +865,7 @@ if ENV_TOKENS.get('AUDIT_CERT_CUTOFF_DATE', None):
 
 ################################ Settings for Credentials Service ################################
 
-CREDENTIALS_GENERATION_ROUTING_KEY = HIGH_PRIORITY_QUEUE
+CREDENTIALS_GENERATION_ROUTING_KEY = ENV_TOKENS.get('CREDENTIALS_GENERATION_ROUTING_KEY', HIGH_PRIORITY_QUEUE)
 
 # The extended StudentModule history table
 if FEATURES.get('ENABLE_CSMH_EXTENDED'):