diff --git a/pyproject.toml b/pyproject.toml
index 96cecc1..a1e9e6c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,10 +4,10 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "pyflapjack"
-version = "1.0.6"
+version = "1.0.14"
 description = "Python package that interfaces the Flapjack API"
 readme = "README.md"
-requires-python = ">=3.7"
+requires-python = ">=3.7,<3.11"
 license = {file = "LICENSE"}
 keywords = ["flapjack", "data", "experimental", "analysis", "synthetic biology"]
 authors = [
@@ -24,18 +24,18 @@ classifiers = [
 ]
 
 dependencies = [
-  'numpy==1.21.2',
-  'scipy==1.8.0',
-  'pandas==1.3.3',
-  'requests==2.26.0',
+  'numpy== 1.26.2',
+  'scipy==1.11.0',
+  'pandas==1.5.3',
+  'requests>=2.25.1',
   'tqdm==4.62.3',
   'plotly==5.3.1',
   'asyncio==3.4.3',
   'nest_asyncio==1.5.1',
   'requests_jwt==0.5.3',
   'websockets==10.0',
-  'matplotlib==3.4.3',
-  'kaleido'
+  'matplotlib>=3.10',
+  'kaleido==0.2.1'
 ]
 
 [project.optional-dependencies]
diff --git a/src/flapjack/flapjack.py b/src/flapjack/flapjack.py
index 1aaf5d0..b220e86 100644
--- a/src/flapjack/flapjack.py
+++ b/src/flapjack/flapjack.py
@@ -57,6 +57,25 @@ def __del__(self):
         
     def handle_response(self, s):
         return True
+        
+    # Sign in to the server
+
+    def sign_up(self, username, password, email):
+        try:
+            s = requests.post(
+                self.http_url_base+'/api/auth/sign_up/', 
+                data={
+                    'username':username, 
+                    'password':password,
+                    'email':email
+                }
+            )
+        except:
+            print(f'Sign up failed.')
+        else:
+            if self.handle_response(s):
+                print(f'Successfully signed up as {username}.')
+                self.log_in(username, password)
 
     def register(self, username, password, password2, email):
         try:
@@ -77,7 +96,17 @@ def register(self, username, password, password2, email):
                 data = s.json()
                 self.access_token = data['access']
                 self.refresh_token = data['refresh']
-    
+
+    def log_in_token(self, username, access_token, refresh_token):
+        try:
+                self.username = username
+                self.access_token = access_token
+                self.refresh_token = refresh_token
+        except:
+            print(f'Invalid token')
+
+
+
     def log_in(self, username, password):
         try:
             s = requests.post(
@@ -95,7 +124,6 @@ def log_in(self, username, password):
                 data = s.json()
                 self.access_token = data['access']
                 self.refresh_token = data['refresh']
-                self.username = username
 
     def log_out(self):
         if self.username:
@@ -103,7 +131,7 @@ def log_out(self):
                 s = requests.post(
                     self.http_url_base+'/api/auth/log_out/', 
                     data={
-                        'username':username
+                        'username':self.username
                     }
                 )
             except:
@@ -165,7 +193,7 @@ def create(self, model, confirm=True, overwrite=False, **kwargs):
                     headers={'Authorization': 'Bearer ' + self.access_token},
                     data=kwargs
                 )
-            elif len(existing) and overwrite == False:
+            elif len(existing) and not overwrite:
                 print(f'Returning exististing model, {model}')
                 return existing 
 
@@ -217,7 +245,7 @@ def get(self, model, **kwargs):
             url = data['next']
         df = pd.DataFrame(results)
         # Convert ids from np.int64 to int
-        df.index = df.index.astype(np.int)
+        df.index = df.index.astype(int)
         return df
     
     def parse_params(self, **kwargs):