diff --git a/requirements.txt b/requirements.txt
index 18846fe34..3add4bf9c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,9 +1,6 @@
-bokeh==2.1.0
-dill==0.3.1.1
+bokeh==2.1.1
 flask==1.1.2
 gunicorn==19.9.0
-jinja2==2.11.2
 pandas==1.0.5
 pip==20.1.1
-requests==2.20.0
-simplejson==3.17.0
+requests==2.24.0
diff --git a/runtime.txt b/runtime.txt
index 03a934b56..385705b56 100644
--- a/runtime.txt
+++ b/runtime.txt
@@ -1 +1 @@
-python-3.7.7
+python-3.8.3
diff --git a/static/default.css b/static/default.css
index 12fe1e360..47d6c9d7d 100644
--- a/static/default.css
+++ b/static/default.css
@@ -47,6 +47,11 @@ h1 {
 	margin:.67em 0
 }
 
+.bokeh {
+	width:100%;
+	max-width:800px;
+}
+
 hr {
 	-webkit-box-sizing:content-box;
 	box-sizing:content-box;
diff --git a/templates/about.html b/templates/about.html
index 8b0f932a0..f8d241536 100644
--- a/templates/about.html
+++ b/templates/about.html
@@ -13,7 +13,7 @@
       <div class="pure-menu pure-menu-horizontal">
         <a href="{{ url_for('index') }}" class="pure-menu-heading pure-menu-link">A Simple Stock Price Visualizer</a>
         </ul>
-      </div>
+      </div>  
       <header>
           <h2>About</h2>
           <p>
diff --git a/templates/index.html b/templates/index.html
index 6f9b7ecaa..dcfc9944c 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -25,9 +25,8 @@
           </li>
         </ul>
       </div>
-
     </div>
-    <div id="myplot"></div>
+    <div class="bokeh" id="myplot"></div>
     <div id="error">
       <p>{{ error }}</p>
     </div>
diff --git a/ticker.py b/ticker.py
index 78da601cc..e7d9ebb2e 100644
--- a/ticker.py
+++ b/ticker.py
@@ -92,6 +92,7 @@ def build_plot(symbol):
                           formatters={'@x': 'datetime'})
         p.add_tools(hover)
         p.toolbar.active_inspect = hover
+        p.sizing_mode = 'stretch_width'
 
         return p