diff --git a/lib/pg/text_decoder/json.rb b/lib/pg/text_decoder/json.rb
index 93ecd55d0..c5a4c118e 100644
--- a/lib/pg/text_decoder/json.rb
+++ b/lib/pg/text_decoder/json.rb
@@ -10,7 +10,7 @@ module TextDecoder
 		# As soon as this class is used, it requires the ruby standard library 'json'.
 		class JSON < SimpleDecoder
 			def decode(string, tuple=nil, field=nil)
-				::JSON.parse(string, quirks_mode: true)
+				::JSON.parse(string)
 			end
 		end
 	end
diff --git a/lib/pg/text_encoder/json.rb b/lib/pg/text_encoder/json.rb
index 36bbc704a..51e6a2cc9 100644
--- a/lib/pg/text_encoder/json.rb
+++ b/lib/pg/text_encoder/json.rb
@@ -10,7 +10,7 @@ module TextEncoder
 		# As soon as this class is used, it requires the ruby standard library 'json'.
 		class JSON < SimpleEncoder
 			def encode(value)
-				::JSON.generate(value, quirks_mode: true)
+				::JSON.generate(value)
 			end
 		end
 	end