diff --git a/grip/github_renderer.py b/grip/github_renderer.py
index 99dabe2..4653aa3 100644
--- a/grip/github_renderer.py
+++ b/grip/github_renderer.py
@@ -18,7 +18,7 @@ def render_content(text, gfm=False, context=None,
         headers = {'content-type': 'text/x-markdown'}
 
     auth = (username, password) if username or password else None
-    r = requests.post(url, headers=headers, data=data, auth=auth)
+    r = requests.post(url, headers=headers, data=data, auth=auth, verify=False)
 
     # Relay HTTP errors
     if r.status_code != 200:
diff --git a/grip/server.py b/grip/server.py
index 0c41199..818c621 100644
--- a/grip/server.py
+++ b/grip/server.py
@@ -259,7 +259,7 @@ def _get_style_urls(source_url, style_pattern, asset_pattern,
                 return cached
 
         # Find style URLs
-        r = requests.get(source_url)
+        r = requests.get(source_url, verify=False)
         if not 200 <= r.status_code < 300:
             print(' * Warning: retrieving styles gave status code',
                   r.status_code)
@@ -303,7 +303,7 @@ def _to_data_url(app, url, content_type):
 
 def _download(app, url):
     if urlparse(url).netloc:
-        return requests.get(url).content
+        return requests.get(url, verify=False).content
 
     with app.test_client() as c:
         return c.get(url).data
@@ -374,7 +374,7 @@ def _cache_contents(style_urls, asset_pattern, asset_pattern_sub, cache_path):
     asset_urls = []
     for style_url in style_urls:
         filename = _cache_filename(style_url, cache_path)
-        contents = requests.get(style_url).text
+        contents = requests.get(style_url, verify=False).text
         # Find assets and replace their base URLs with the cache directory
         asset_urls += map(lambda url: urljoin(style_url, url),
                           re.findall(asset_pattern, contents))
@@ -385,7 +385,7 @@ def _cache_contents(style_urls, asset_pattern, asset_pattern_sub, cache_path):
 
     for asset_url in asset_urls:
         filename = _cache_filename(asset_url, cache_path)
-        contents = requests.get(asset_url).text
+        contents = requests.get(asset_url, verify=False).text
         # Write file and show message
         _write_file(filename, contents)
         print(' * Cached', asset_url, 'in', cache_path)