diff --git a/tasktiger/_internal.py b/tasktiger/_internal.py
index 6f31d23..7b00b57 100644
--- a/tasktiger/_internal.py
+++ b/tasktiger/_internal.py
@@ -27,6 +27,11 @@
     from .task import Task
     from .tasktiger import TaskTiger
 
+# Constants pertaining to Redis keys
+TASK = "task"
+EXECUTIONS = "executions"
+EXECUTIONS_COUNT = "executions_count"
+
 # Task states (represented by different queues)
 # Note some client code may rely on the string values (e.g. get_queue_stats).
 QUEUED = "queued"
diff --git a/tasktiger/constants.py b/tasktiger/constants.py
deleted file mode 100644
index 6baf92d..0000000
--- a/tasktiger/constants.py
+++ /dev/null
@@ -1,11 +0,0 @@
-# constants pertaining to Redis keys
-REDIS_PREFIX = "t"
-TASK = "task"
-EXECUTIONS = "executions"
-EXECUTIONS_COUNT = "executions_count"
-
-
-QUEUED = "queued"
-ACTIVE = "active"
-SCHEDULED = "scheduled"
-ERROR = "error"
diff --git a/tasktiger/migrations.py b/tasktiger/migrations.py
index 3a80a2a..68bbb2c 100644
--- a/tasktiger/migrations.py
+++ b/tasktiger/migrations.py
@@ -1,6 +1,6 @@
 from typing import TYPE_CHECKING
 
-from .constants import EXECUTIONS, TASK
+from ._internal import EXECUTIONS, TASK
 from .utils import redis_glob_escape
 
 if TYPE_CHECKING:
diff --git a/tasktiger/redis_scripts.py b/tasktiger/redis_scripts.py
index 6c068e8..127e1ef 100644
--- a/tasktiger/redis_scripts.py
+++ b/tasktiger/redis_scripts.py
@@ -3,8 +3,15 @@
 
 from redis import Redis
 
-from ._internal import ACTIVE, ERROR, QUEUED, SCHEDULED
-from .constants import EXECUTIONS, EXECUTIONS_COUNT, TASK
+from ._internal import (
+    ACTIVE,
+    ERROR,
+    EXECUTIONS,
+    EXECUTIONS_COUNT,
+    QUEUED,
+    SCHEDULED,
+    TASK,
+)
 
 try:
     from redis.commands.core import Script
diff --git a/tasktiger/task.py b/tasktiger/task.py
index c723d32..0e08fc8 100644
--- a/tasktiger/task.py
+++ b/tasktiger/task.py
@@ -20,8 +20,11 @@
 
 from ._internal import (
     ERROR,
+    EXECUTIONS,
+    EXECUTIONS_COUNT,
     QUEUED,
     SCHEDULED,
+    TASK,
     g,
     gen_id,
     gen_unique_id,
@@ -30,7 +33,6 @@
     serialize_func_name,
     serialize_retry_method,
 )
-from .constants import EXECUTIONS, EXECUTIONS_COUNT, TASK
 from .exceptions import QueueFullException, TaskImportError, TaskNotFound
 from .runner import BaseRunner, get_runner_class
 from .types import RetryStrategy
diff --git a/tasktiger/worker.py b/tasktiger/worker.py
index b322540..9f944e4 100644
--- a/tasktiger/worker.py
+++ b/tasktiger/worker.py
@@ -36,8 +36,11 @@
 from ._internal import (
     ACTIVE,
     ERROR,
+    EXECUTIONS,
+    EXECUTIONS_COUNT,
     QUEUED,
     SCHEDULED,
+    TASK,
     dotted_parts,
     g,
     g_fork_lock,
@@ -47,7 +50,6 @@
     serialize_func_name,
     serialize_retry_method,
 )
-from .constants import EXECUTIONS, EXECUTIONS_COUNT, TASK
 from .exceptions import (
     RetryException,
     StopRetry,