diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..64b274f
Binary files /dev/null and b/.DS_Store differ
diff --git a/Gemfile.lock b/Gemfile.lock
index c939219..f71e5e5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,13 +4,13 @@ PATH
     ruby-cda (0.3.0)
       activesupport (>= 5.0)
       i18n (>= 1)
-      nokogiri (>= 1.6)
+      nokogiri (>= 1.13.4)
       virtus (>= 1.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (7.0.2.3)
+    activesupport (7.0.4)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
@@ -25,35 +25,35 @@ GEM
     concurrent-ruby (1.1.10)
     descendants_tracker (0.0.4)
       thread_safe (~> 0.3, >= 0.3.1)
-    diff-lcs (1.4.4)
-    i18n (1.10.0)
+    diff-lcs (1.5.0)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     ice_nine (0.11.2)
     mini_portile2 (2.8.0)
-    minitest (5.15.0)
-    nokogiri (1.13.3)
+    minitest (5.16.3)
+    nokogiri (1.13.8)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     racc (1.6.0)
-    rspec (3.10.0)
-      rspec-core (~> 3.10.0)
-      rspec-expectations (~> 3.10.0)
-      rspec-mocks (~> 3.10.0)
+    rspec (3.11.0)
+      rspec-core (~> 3.11.0)
+      rspec-expectations (~> 3.11.0)
+      rspec-mocks (~> 3.11.0)
     rspec-collection_matchers (1.2.0)
       rspec-expectations (>= 2.99.0.beta1)
-    rspec-core (3.10.1)
-      rspec-support (~> 3.10.0)
-    rspec-expectations (3.10.1)
+    rspec-core (3.11.0)
+      rspec-support (~> 3.11.0)
+    rspec-expectations (3.11.1)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-mocks (3.10.2)
+      rspec-support (~> 3.11.0)
+    rspec-mocks (3.11.1)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-support (3.10.2)
-    rspec_junit_formatter (0.4.1)
+      rspec-support (~> 3.11.0)
+    rspec-support (3.11.1)
+    rspec_junit_formatter (0.6.0)
       rspec-core (>= 2, < 4, != 2.12.0)
     thread_safe (0.3.6)
-    tzinfo (2.0.4)
+    tzinfo (2.0.5)
       concurrent-ruby (~> 1.0)
     virtus (2.0.0)
       axiom-types (~> 0.1)
diff --git a/lib/ccd/autoloads.rb b/lib/ccd/autoloads.rb
index 677b0e0..015d2d3 100644
--- a/lib/ccd/autoloads.rb
+++ b/lib/ccd/autoloads.rb
@@ -276,7 +276,9 @@ module Ccd
   autoload :ProductInstance, 'ccd/models/product_instance.rb'
   autoload :ProductInstanceTemplate, 'ccd/templates/product_instance_template.rb'
   autoload :ProgressNote, 'ccd/models/progress_note.rb'
+  autoload :ProgressNoteAct, 'ccd/models/progress_note_act.rb'
   autoload :ProgressNoteTemplate, 'ccd/templates/progress_note_template.rb'
+  autoload :ProgressNoteActTemplate, 'ccd/templates/progress_note_act_template.rb'
   autoload :PurposeOfReferenceObservation, 'ccd/models/purpose_of_reference_observation.rb'
   autoload :PurposeOfReferenceObservationTemplate, 'ccd/templates/purpose_of_reference_observation_template.rb'
   autoload :QuantityMeasurementObservation, 'ccd/models/quantity_measurement_observation.rb'
diff --git a/lib/ccd/models/progress_note_act.rb b/lib/ccd/models/progress_note_act.rb
new file mode 100644
index 0000000..1895fdc
--- /dev/null
+++ b/lib/ccd/models/progress_note_act.rb
@@ -0,0 +1,11 @@
+module Ccd
+  class ProgressNoteAct < Cda::Act
+    include Ccd::ProgressNoteActTemplate
+
+    def self.template_type
+      "act"
+    end
+
+    Ccd.load_extension('progress_note_act.rb')
+  end
+end
diff --git a/lib/ccd/templates/progress_note_act_template.rb b/lib/ccd/templates/progress_note_act_template.rb
new file mode 100644
index 0000000..824097e
--- /dev/null
+++ b/lib/ccd/templates/progress_note_act_template.rb
@@ -0,0 +1,30 @@
+module Ccd::ProgressNoteActTemplate
+  def self.include(base)
+    base.class_eval do
+      extend ::Ccd::Dsl
+
+      # SHALL contain exactly one [1..1] @classCode="ACT" (CodeSystem: HL7ActClass 2.16.840.1.113883.5.6 STATIC) (CONF:7469).
+      constraint 'class_code', {:cardinality=>"1..1", :value=>"ACT"}
+
+      # SHALL contain exactly one [1..1] @moodCode="EVN" Event (CodeSystem: ActMood 2.16.840.1.113883.5.1001 STATIC) (CONF:7470).
+      constraint 'mood_code', {:cardinality=>"1..1", :value=>"EVN"}
+
+      # SHALL contain exactly one [1..1] @root="2.16.840.1.113883.10.20.22.4.202" (CONF:10489).
+      constraint 'template_id', {:cardinality=>"1..1", :value=>{:root=>"2.16.840.1.113883.10.20.22.4.202", :extension=>"2016-11-01"}}
+
+      # SHALL contain exactly one [1..1] code (CONF:7477).
+      constraint 'code', {:cardinality=>"1..1", :value=>{:code=>"34109-9", :display_name=>"Note", :code_system=>"2.16.840.1.113883.6.1", :codeSystemName=>"LOINC"}}
+
+      constraint 'code.translation', {:cardinality=>"1..1", :value=>{:code=>"11506-3", :display_name=>"ProgressNote", :code_system=>"2.16.840.1.113883.6.1", :codeSystemName=>"LOINC"}}
+
+      # SHALL contain exactly one [1..1] text (CONF:7270).
+      constraint 'text', {:cardinality=>"1..1"}
+
+      # This statusCode SHALL contain exactly one [1..1] @code, which SHALL be selected from ValueSet ProblemAct statusCode 2.16.840.1.113883.11.20.9.19 STATIC 2011-09-09 (CONF:19086).
+      constraint 'status_code.code', {:cardinality=>"1..1"}
+
+      # SHALL contain exactly one [1..1] effectiveTime (CONF:7498).
+      constraint 'effective_time', {:cardinality=>"1..1"}
+    end
+  end
+end
\ No newline at end of file
diff --git a/ruby-cda.gemspec b/ruby-cda.gemspec
index 6fcfb93..7a7015d 100644
--- a/ruby-cda.gemspec
+++ b/ruby-cda.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |s|
   s.homepage    = 'https://github.com/niquola/ruby-cda'
 
   s.add_dependency 'activesupport', '>= 5.0'
-  s.add_dependency 'nokogiri',      '>= 1.6'
+  s.add_dependency 'nokogiri',      '>= 1.13.4'
   s.add_dependency 'virtus',        '>= 1.0'
   s.add_dependency 'i18n',          '>= 1'