diff --git a/README.md b/README.md
index bf269d0..715de94 100644
--- a/README.md
+++ b/README.md
@@ -88,14 +88,12 @@ You can create your own grammar by creating a gem that provides these files and
 
 ### 10.0.0 (?)
 
-* Support creating XML with AKN 3 namespace (http://docs.oasis-open.org/legaldocml/ns/akn/3.0)
-* Add --namespace option to toggle between generate AKN2 and AKN3 documents
-* Remove unnecessary schemaLocation header in root element
-* BREAKING: default to AKN3 namespace
+* BREAKING: Create XML with AKN 3 namespace (http://docs.oasis-open.org/legaldocml/ns/akn/3.0), AKN2 is no longer supported
 * BREAKING: replace id attributes with eId attributes
 * BREAKING: serialize schedules as attachments to act, not as components as peers of the act
 * BREAKING: anonymous blocks are serialized as hcontainers, not paragraphs
 * BREAKING: crossheading hcontainer IDs correctly use hcontainer
+* Remove unnecessary schemaLocation header in root element
 
 ### 9.2.0 (10 June 2020)
 
diff --git a/bin/slaw b/bin/slaw
index b4facde..5dec252 100755
--- a/bin/slaw
+++ b/bin/slaw
@@ -19,7 +19,7 @@ class SlawCLI < Thor
   option :section_number_position, enum: ['before-title', 'after-title', 'guess'], desc: "Where do section titles come in relation to the section number? Default: before-title"
   option :grammar, type: :string, desc: "Grammar name (usually a two-letter country code). Default is za."
   option :ascii, type: :boolean, default: false, desc: "Process text as ASCII using %-encoding. This can provide significant speed improvements if the grammar uses only ASCII literals. See https://github.com/cjheath/treetop/issues/31."
-  option :namespace, enum: ['akn2', 'akn3'], default: 'akn3', desc: 'AKN XML namespace to use.'
+  option :namespace, enum: ['akn3'], default: 'akn3', desc: 'AKN XML namespace to use.'
   def parse(name)
     logging
 
@@ -35,8 +35,6 @@ class SlawCLI < Thor
     end
 
     case options[:namespace]
-    when 'akn2'
-      Slaw.akn_namespace = Slaw::AKN2_NS
     when 'akn3'
       Slaw.akn_namespace = Slaw::AKN3_NS
     end
diff --git a/lib/slaw/namespace.rb b/lib/slaw/namespace.rb
index 5550a8a..a3c022e 100644
--- a/lib/slaw/namespace.rb
+++ b/lib/slaw/namespace.rb
@@ -1,5 +1,4 @@
 module Slaw
-  AKN2_NS = 'http://www.akomantoso.org/2.0'
   AKN3_NS = 'http://docs.oasis-open.org/legaldocml/ns/akn/3.0'
 
   @@ns = AKN3_NS