diff --git a/passbook/core/signals.py b/passbook/core/signals.py
index ec0aea598..d6c9446f5 100644
--- a/passbook/core/signals.py
+++ b/passbook/core/signals.py
@@ -1,4 +1,5 @@
 """passbook core signals"""
 from django.core.signals import Signal
 
-password_changed = Signal(providing_args=["user", "password"])
+# Arguments: user: User, password: str
+password_changed = Signal()
diff --git a/passbook/stages/invitation/signals.py b/passbook/stages/invitation/signals.py
index 99b7fa0d1..34b4614a8 100644
--- a/passbook/stages/invitation/signals.py
+++ b/passbook/stages/invitation/signals.py
@@ -1,5 +1,7 @@
 """passbook invitation signals"""
 from django.core.signals import Signal
 
-invitation_created = Signal(providing_args=["request", "invitation"])
-invitation_used = Signal(providing_args=["request", "invitation"])
+# Arguments: request: HttpRequest, invitation: Invitation
+invitation_created = Signal()
+# Arguments: request: HttpRequest, invitation: Invitation
+invitation_used = Signal()
diff --git a/passbook/stages/prompt/signals.py b/passbook/stages/prompt/signals.py
index ad4b6bd11..61cc43e12 100644
--- a/passbook/stages/prompt/signals.py
+++ b/passbook/stages/prompt/signals.py
@@ -1,4 +1,5 @@
 """passbook prompt stage signals"""
 from django.core.signals import Signal
 
-password_validate = Signal(providing_args=["password", "plan_context"])
+# Arguments: password: str, plan_context: Dict[str, Any]
+password_validate = Signal()
diff --git a/passbook/stages/user_write/signals.py b/passbook/stages/user_write/signals.py
index e70401ca5..6fa602b0a 100644
--- a/passbook/stages/user_write/signals.py
+++ b/passbook/stages/user_write/signals.py
@@ -1,4 +1,5 @@
 """passbook user_write signals"""
 from django.core.signals import Signal
 
-user_write = Signal(providing_args=["request", "user", "data"])
+# Arguments: request: HttpRequest, user: User, data: Dict[str, Any]
+user_write = Signal()