diff --git a/CHANGELOG.md b/CHANGELOG.md
index db44e5034..57e1a4be3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,7 +8,8 @@
 
 ##### Bug Fixes
 
-* None.  
+* Ensure that specs can round-trip to JSON byte-for-byte identical.  
+  [Samuel Giddins](https://github.com/segiddins)
 
 
 ## 1.8.1 (2019-09-27)
diff --git a/lib/cocoapods-core/specification/json.rb b/lib/cocoapods-core/specification/json.rb
index 7230908d8..a6ac3c32d 100644
--- a/lib/cocoapods-core/specification/json.rb
+++ b/lib/cocoapods-core/specification/json.rb
@@ -22,6 +22,7 @@ def to_pretty_json(*a)
       #
       def to_hash
         hash = attributes_hash.dup
+        hash.delete('platforms')
         if root? || available_platforms != parent.available_platforms
           platforms = Hash[available_platforms.map { |p| [p.name.to_s, p.deployment_target && p.deployment_target.to_s] }]
           hash['platforms'] = platforms
@@ -31,13 +32,17 @@ def to_hash
         all_testspecs = specs_by_type[:test] || []
         all_subspecs = specs_by_type[:library] || []
 
+        hash.delete('testspecs')
         hash['testspecs'] = all_testspecs.map(&:to_hash) unless all_testspecs.empty?
+        hash.delete('appspecs')
         hash['appspecs'] = all_appspecs.map(&:to_hash) unless all_appspecs.empty?
+        hash.delete('subspecs')
         hash['subspecs'] = all_subspecs.map(&:to_hash) unless all_subspecs.empty?
 
         # Since CocoaPods 1.7 version the DSL has changed to be pluralized. When we serialize a podspec to JSON with
         # 1.7, ensure that we also include the singular version in the hash to maintain backwards compatibility with
         # < 1.7 versions.
+        hash.delete('swift_version')
         hash['swift_version'] = swift_version.to_s unless swift_version.nil?
 
         hash
diff --git a/spec/specification/json_spec.rb b/spec/specification/json_spec.rb
index 70309330b..ed96ebd9f 100644
--- a/spec/specification/json_spec.rb
+++ b/spec/specification/json_spec.rb
@@ -63,6 +63,23 @@ module Pod
         spec = Specification.new(nil, 'BananaLib')
         spec.to_pretty_json.should.end_with "\n"
       end
+
+      it 'can round-trip' do
+        spec = Specification.new do |s|
+          s.name = 'BananaLib'
+          s.app_spec 'App'
+          s.test_spec 'Tests'
+          s.version = '17.0'
+          s.swift_versions = %w(5.0)
+        end
+
+        json = spec.to_pretty_json
+
+        loaded_spec = Specification.from_json(json)
+        new_json = loaded_spec.to_pretty_json
+
+        new_json.should.equal json
+      end
     end
 
     #-------------------------------------------------------------------------#