diff --git a/CHANGELOG.md b/CHANGELOG.md
index 56245b7..62ed225 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,13 @@
+# Version 0.2.0
+
+Support for base URLs. The `indico: url:` parameter is *required*.
+
 # Version 0.1.0
 
 First version to be published, pulled from the IRIS-HEP website.
 
 Extra features added during the transition include:
+
 * Config settings for IDs and data path.
 * `jekyll-indico-cache` script has customizable `--config` location.
 * Some basic unit testing
diff --git a/Gemfile.lock b/Gemfile.lock
index a4a5b14..6522583 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    jekyll-indico (0.1.0)
+    jekyll-indico (0.2.0)
       jekyll (>= 3.8, < 5.0)
 
 GEM
diff --git a/README.md b/README.md
index 8c2b9f8..92cfaea 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@ Your `_config.yaml` file should contain the categories you want to download:
 
 ```yaml
 indico:
+  url: https://indico.cern.ch # Indico instance to use (REQUIRED)
   data: indico # Optional, folder name in _data to use
   ids:
     topical: 10570
diff --git a/exe/jekyll-indico-cache b/exe/jekyll-indico-cache
index c7efd48..d796200 100755
--- a/exe/jekyll-indico-cache
+++ b/exe/jekyll-indico-cache
@@ -19,8 +19,9 @@ puts "Reading #{options[:config]}"
 
 config = YAML.safe_load(File.read(options[:config]))
 meeting_ids = JekyllIndico::Meetings.meeting_ids(config)
+base_url = JekyllIndico::Meetings.base_url(config)
 data_path = config.dig('indico', 'data') || 'indico'
 
-JekyllIndico.cache(meeting_ids, data_path) do |name, number|
+JekyllIndico.cache(base_url, meeting_ids, data_path) do |name, number|
   puts "Accessing #{number} for #{name}"
 end
diff --git a/lib/jekyll-indico/cache.rb b/lib/jekyll-indico/cache.rb
index c0ab714..fa2c67a 100644
--- a/lib/jekyll-indico/cache.rb
+++ b/lib/jekyll-indico/cache.rb
@@ -9,7 +9,7 @@
 module JekyllIndico
   # This will cache the hash of meeting IDs given into the data_path in _data
   # in the current directory.
-  def self.cache(meeting_ids, data_path)
+  def self.cache(base_url, meeting_ids, data_path)
     meeting_ids.each do |name, number|
       yield name, number
       indico_dir = Pathname.new('_data') / data_path
@@ -17,7 +17,7 @@ def self.cache(meeting_ids, data_path)
       indico_dir.mkdir unless indico_dir.directory?
       folder.mkdir unless folder.directory?
 
-      iris_meeting = JekyllIndico::Meetings.new number
+      iris_meeting = JekyllIndico::Meetings.new(base_url, number)
       iris_meeting.to_files(folder) { |key| puts "Making #{folder / key}.yml\n" }
     end
   end
diff --git a/lib/jekyll-indico/core.rb b/lib/jekyll-indico/core.rb
index 5a2db14..823bf3d 100644
--- a/lib/jekyll-indico/core.rb
+++ b/lib/jekyll-indico/core.rb
@@ -9,15 +9,21 @@
 require 'openssl'
 
 module JekyllIndico
+  class Error < StandardError
+  end
+
+  class MissingURL < Error
+  end
+
   # Look for topical meetings
   class Meetings
     attr_accessor :dict
 
     # ID for IRIS-HEP: 10570
-    def initialize(indico_id, **kargs)
+    def initialize(base_url, indico_id, **kargs)
       @dict = {}
 
-      download_and_iterate(indico_id, **kargs) do |i|
+      download_and_iterate(base_url, indico_id, **kargs) do |i|
         # Trim paragraph tags
         d = i['description']
         d = d[3..-1] if d.start_with? '<p>'
@@ -56,11 +62,19 @@ def self.meeting_ids(config = {})
       config.dig('indico', 'ids')
     end
 
+    # Get base URL from a config
+    def self.base_url(config = {})
+      url = config.dig('indico', 'url')
+      raise MissingURL('indico: url: MISSING from your config!') unless url
+
+      url
+    end
+
     private
 
     # Run a block over each item in the downloaded results
-    def download_and_iterate(indico_id, **kargs, &block)
-      url = build_url(indico_id, **kargs)
+    def download_and_iterate(base_url, indico_id, **kargs, &block)
+      url = build_url(base_url, indico_id, **kargs)
       uri = URI.parse(url)
       response = Net::HTTP.get_response(uri)
 
@@ -77,7 +91,7 @@ def join_url(indico_id, options)
     end
 
     # Automatically signs request if environment has INDICO_API/SECRET_KEY
-    def build_url(indico_id, **kargs)
+    def build_url(base_url, indico_id, **kargs)
       kargs[:pretty] = 'no'
 
       if ENV['INDICO_API_KEY']
@@ -89,7 +103,7 @@ def build_url(indico_id, **kargs)
         end
       end
 
-      "https://indico.cern.ch#{join_url(indico_id, kargs)}"
+      "#{base_url}#{join_url(indico_id, kargs)}"
     end
   end
 end
diff --git a/lib/jekyll-indico/generator.rb b/lib/jekyll-indico/generator.rb
index d6479f7..4d4ec91 100644
--- a/lib/jekyll-indico/generator.rb
+++ b/lib/jekyll-indico/generator.rb
@@ -15,13 +15,15 @@ def generate(site)
 
       meeting_ids = Meetings.meeting_ids(@site.config)
       meeting_ids.each do |name, number|
-        collect_meeting name.to_s, number
+        collect_meeting(name.to_s, number)
       end
     end
 
     private
 
     def collect_meeting(name, number)
+      base_url = Meetings.base_url(@site.config)
+
       data_path = @site.config.dig('indico', 'data') || 'indico'
       @site.data[data_path] = {} unless @site.data.key? data_path
 
@@ -30,7 +32,7 @@ def collect_meeting(name, number)
 
       puts "Accessing Indico meeting API for #{name}:#{number} " \
            '- run `bundle exec rake cache` to cache'
-      iris_meeting = Meetings.new(number)
+      iris_meeting = Meetings.new(base_url, number)
       @site.data[data_path][name] = iris_meeting.dict
     end
   end
diff --git a/lib/jekyll-indico/version.rb b/lib/jekyll-indico/version.rb
index 2241896..b76a7a0 100644
--- a/lib/jekyll-indico/version.rb
+++ b/lib/jekyll-indico/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module JekyllIndico
-  VERSION = '0.1.1'
+  VERSION = '0.2.0'
 end
diff --git a/spec/jekyll-indico_spec.rb b/spec/jekyll-indico_spec.rb
index c5425e1..2729497 100644
--- a/spec/jekyll-indico_spec.rb
+++ b/spec/jekyll-indico_spec.rb
@@ -7,9 +7,9 @@
     expect(JekyllIndico::VERSION).not_to be nil
   end
 
-  context 'with a topical meeting' do
+  context 'with a CERN topical meeting' do
     before :all do
-      @meeting = JekyllIndico::Meetings.new 10570
+      @meeting = JekyllIndico::Meetings.new('https://indico.cern.ch', 10570)
     end
 
     it 'has expected meetings' do