diff --git a/pyproject.toml b/pyproject.toml
index 5c2dc83..05dffb7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ dependencies = [
     "slack-bolt==1.30.0",
     "slack-cli-hooks<1.0.0",
     "openai==2.53.0",
-    "python-dotenv==1.2.2",
+    "python-dotenv==1.2.3",
 ]
 
 [project.optional-dependencies]
diff --git a/requirements.txt b/requirements.txt
index 56939fc..c164455 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,5 +7,5 @@ openai==2.53.0
 
 pytest==9.1.1
 ruff==0.16.3
-python-dotenv==1.2.2
+python-dotenv==1.2.3
 slack-cli-hooks<1.0.0