diff --git a/requirements.txt b/requirements.txt
index 6dd0753..e2ff01c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,5 +31,6 @@ setuptools==75.3.0
 sqlparse==0.4.1
 toml==0.10.2
 typing_extensions==4.12.2
+tzdata==2024.2
 urllib3==2.2.3
 wrapt==1.12.1
diff --git a/shimatta_kenkyusho/shimatta_kenkyusho/settings_production.py b/shimatta_kenkyusho/shimatta_kenkyusho/settings_production.py
index 2775540..ebc7326 100644
--- a/shimatta_kenkyusho/shimatta_kenkyusho/settings_production.py
+++ b/shimatta_kenkyusho/shimatta_kenkyusho/settings_production.py
@@ -56,6 +56,7 @@ if get_env_value('DJANGO_FORCE_DEV_MODE', default=False) == 'True':
 
 ALLOWED_HOSTS = ['127.0.0.1', 'localhost', get_env_value('DJANGO_ALLOWED_HOST')]
 
+CSRF_TRUSTED_ORIGINS =['https://' + get_env_value('DJANGO_ALLOWED_HOST')]
 
 # Application definition