diff --git a/CHANGELOG.md b/CHANGELOG.md
index c76da83..951d980 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1 +1,7 @@
-No changes since release yet.
+## HEAD
+
+* Add support for dashes in `Worker` names to match the Procfile process naming format. `Worker` is implicitly used when configuring HireFire using the `Configuration#dyno` method.
+
+## v1.0.0
+
+* Initial release.
diff --git a/hirefire_resource/worker.py b/hirefire_resource/worker.py
index eddcaad..50f2ed0 100644
--- a/hirefire_resource/worker.py
+++ b/hirefire_resource/worker.py
@@ -10,7 +10,7 @@ class MissingDynoProcError(Exception):
 
 
 class Worker:
-    PROCESS_NAME_PATTERN = r"^[a-zA-Z][a-zA-Z0-9_]{0,29}$"
+    PROCESS_NAME_PATTERN = r"^[a-zA-Z][a-zA-Z0-9_-]{0,29}$"
 
     def __init__(self, name, proc=None):
         self._validate(name, proc)
diff --git a/tests/hirefire_resource/test_worker.py b/tests/hirefire_resource/test_worker.py
index 0ba284a..22a92ec 100644
--- a/tests/hirefire_resource/test_worker.py
+++ b/tests/hirefire_resource/test_worker.py
@@ -3,15 +3,39 @@
 from hirefire_resource.worker import InvalidDynoNameError, MissingDynoProcError, Worker
 
 
-def test_worker_initialization_and_methods():
-    worker = Worker("worker", lambda: 1.23)
-    assert worker.name == "worker"
-    assert worker.value() == 1.23
+def test_worker_valid_initialization():
+    valid_names = [
+        "worker",
+        "worker1",
+        "my-worker",
+        "my_worker",
+        "Worker_123",
+        "worker-123",
+        "w",
+        "a" * 30,
+    ]
 
+    for name in valid_names:
+        worker = Worker(name, lambda: 1.23)
+        assert worker.name == name
+        assert worker.value() == 1.23
 
-def test_invalid_dyno_name_error():
-    with pytest.raises(InvalidDynoNameError):
-        Worker("invalid name", lambda: 1.23)
+
+def test_worker_invalid_name_raises_error():
+    invalid_names = [
+        "",  # Empty string
+        "1worker",  # Starts with a digit
+        "-worker",  # Starts with a dash
+        "_worker",  # Starts with an underscore
+        "worker!",  # Contains an invalid character
+        " worker",  # Starts with a space
+        "worker ",  # Ends with a space
+        "a" * 31,  # Exceeds maximum length
+    ]
+
+    for name in invalid_names:
+        with pytest.raises(InvalidDynoNameError):
+            Worker(name, lambda: 1.23)
 
 
 def test_missing_dyno_proc_error():