diff --git a/pyproject.toml b/pyproject.toml
index 96bd428..601862f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "vger"
-version = "0.2.2"
+version = "0.2.3"
 description = "An execution framework for Jupyter environments."
 authors = ["Joseph Lucas <joe@joetl.com>"]
 license = "GPL-3.0-only"
diff --git a/vger/attack.py b/vger/attack.py
index b277897..0dc54c6 100644
--- a/vger/attack.py
+++ b/vger/attack.py
@@ -50,7 +50,7 @@ async def attack_session(self, session, code, silent=True, print_out=True):
         ws_base_url = urlparse(self.connection.url)._replace(scheme="ws").geturl()
         ws_url = (
             ws_base_url
-            + f'api/kernels/{jpy_sess['kernel']['id']}/channels?session_id={jpy_sess['id']}'
+            + f"api/kernels/{jpy_sess['kernel']['id']}/channels?session_id={jpy_sess['id']}"
         )
         async with connect(
             ws_url, extra_headers=self.connection.headers, close_timeout=5
@@ -113,7 +113,7 @@ async def snoop(self, session, timeout=60):
         ws_base_url = urlparse(self.connection.url)._replace(scheme="ws").geturl()
         ws_url = (
             ws_base_url
-            + f'api/kernels/{jpy_sess['kernel']['id']}/channels?session_id={jpy_sess['id']}'
+            + f"api/kernels/{jpy_sess['kernel']['id']}/channels?session_id={jpy_sess['id']}"
         )
 
         async with connect(