diff --git a/semvertag/providers/_base.py b/semvertag/providers/_base.py
index fc14f2c..8ad3866 100644
--- a/semvertag/providers/_base.py
+++ b/semvertag/providers/_base.py
@@ -4,7 +4,8 @@
 
 
 class Provider(typing.Protocol):
-    name: str
+    @property
+    def name(self) -> str: ...
 
     def get_default_branch(self) -> str: ...
     def get_latest_commit_on_default_branch(self) -> Commit: ...
diff --git a/semvertag/strategies/_base.py b/semvertag/strategies/_base.py
index 0ddf211..f89728d 100644
--- a/semvertag/strategies/_base.py
+++ b/semvertag/strategies/_base.py
@@ -4,8 +4,11 @@
 
 
 class BumpStrategy(typing.Protocol):
-    name: str
-    no_bump_status: str
-    no_bump_reason: str
+    @property
+    def name(self) -> str: ...
+    @property
+    def no_bump_status(self) -> str: ...
+    @property
+    def no_bump_reason(self) -> str: ...
 
     def decide(self, commit: Commit) -> Bump: ...