diff --git a/CHANGELOG.md b/CHANGELOG.md
index c06547fd5d08bbb9563c1985700946444d6cfc9d..7abd6a59ffd4687a54a6a586706e100755f61e61 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,9 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added ###
 - `check_reference_field` function to check whether entities with provided ids
   exits (for example when importing data from a table)
-- added the `datatypes` argument to `TableImporter` for columns that do not 
+- added the `datatypes` argument to `TableImporter` for columns that do not
   need a special conversion function
-- `generic_analysis.py` allows to easily call scripts to perform analyses in 
+- `generic_analysis.py` allows to easily call scripts to perform analyses in
   server side scripting
 
 ### Changed ###
diff --git a/src/caosadvancedtools/serverside/examples/example_script.py b/src/caosadvancedtools/serverside/examples/example_script.py
index c57fb68c83f4249d532554d23d58a3d53dd66d81..b91ee1a4cb0158b32a2634598c8ae83c5bb3f915 100755
--- a/src/caosadvancedtools/serverside/examples/example_script.py
+++ b/src/caosadvancedtools/serverside/examples/example_script.py
@@ -62,7 +62,7 @@ logger = logging.getLogger(__name__)
 guard.set_level(level=UPDATE)
 
 
-def send_mail(changes, receipient):
+def send_mail(changes: [db.Entity], receipient: str):
     """ calls sendmail in order to send a mail to the curator about pending
     changes
 
diff --git a/src/caosadvancedtools/serverside/generic_analysis.py b/src/caosadvancedtools/serverside/generic_analysis.py
index d21b5659c0d598b2bc15aa4db3501c74490a3ed9..ece04070df5b87660a002fbe05ca9c1f32f2d114 100644
--- a/src/caosadvancedtools/serverside/generic_analysis.py
+++ b/src/caosadvancedtools/serverside/generic_analysis.py
@@ -130,7 +130,7 @@ def check_referenced_script(record: db.Record):
     return script_name
 
 
-def call_script(script_name, record_id):
+def call_script(script_name: str, record_id: int):
     ret = run_server_side_script(script_name, record_id)
 
     if ret.code != 0: