diff --git a/DESCRIPTION b/DESCRIPTION
index 956813d..fbe2748 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -2,7 +2,7 @@ Package: jsonify
 Type: Package
 Title: Convert Between 'R' Objects and Javascript Object Notation (JSON)
 Version: 1.2.3
-Date: 2024-01-18
+Date: 2024-05-21
 Authors@R: c(
     person("David", "Cooley", ,"dcooley@symbolix.com.au", role = c("aut", "cre")),
     person("Chris", "Muir", role = "ctb"),
@@ -11,8 +11,7 @@ Authors@R: c(
 Description: Conversions between 'R' objects and Javascript Object Notation (JSON) using 
     the 'rapidjsonr' library <https://CRAN.R-project.org/package=rapidjsonr>. 
 License: MIT + file LICENSE
-Depends: R (>= 3.3.0)
-SystemRequirements: C++11
+Depends: R (>= 4.0.0)
 Imports: 
   Rcpp (>= 1.0.10)
 LinkingTo:
@@ -28,3 +27,5 @@ Encoding: UTF-8
 URL: https://symbolixau.github.io/jsonify/, https://github.com/SymbolixAU/jsonify
 BugReports: https://github.com/SymbolixAU/jsonify/issues
 VignetteBuilder: knitr
+remotes:
+	https://github.com/SymbolixAU/rapidjsonr
diff --git a/NEWS.md b/NEWS.md
index 26a1e2e..d489893 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,6 @@
 ## v1.2.3
 
+* removed C++11 System requirement
 * patch for handling Int64 [issue 81](https://github.com/symbolixAU/jsonify/issues/81)
 
 ## v1.2.2
diff --git a/inst/include/jsonify/from_json/from_json.hpp b/inst/include/jsonify/from_json/from_json.hpp
index a49b04a..0430551 100644
--- a/inst/include/jsonify/from_json/from_json.hpp
+++ b/inst/include/jsonify/from_json/from_json.hpp
@@ -2,7 +2,6 @@
 #define R_JSONIFY_FROM_JSON_H
 
 #include <Rcpp.h>
-
 #include "from_json_utils.hpp"
 #include "simplify/simplify.hpp"
 
@@ -77,18 +76,19 @@ namespace from_json {
     Rcpp::CharacterVector names( json_length );
     R_xlen_t i = 0;
     
+    // removed in 1.2.3 
     // https://github.com/Tencent/rapidjson/issues/162#issuecomment-341824061
-  #if __cplusplus >= 201703L
-    for ( const auto& [key, value] : json.GetObject() ) {
-      out[ i ] = parse_json( value, simplify, fill_na );
-      names[ i++ ] = std::string( key );
-    }
-  #else
+  // #if __cplusplus >= 201703L
+  //   for ( const auto& [key, value] : json.GetObject() ) {
+  //     out[ i ] = parse_json( value, simplify, fill_na );
+  //     names[ i++ ] = std::string( key );
+  //   }
+  // #else
     for ( const auto& key_value : json.GetObject() ) {
       out[ i ] = parse_json( key_value.value, simplify, fill_na );
       names[ i++ ] = std::string( key_value.name.GetString() );
     }
-  #endif
+  // #endif
     out.attr("names") = names;
     return out;
   }
diff --git a/src/Makevars b/src/Makevars
index e9668c9..7f94a7d 100644
--- a/src/Makevars
+++ b/src/Makevars
@@ -1,4 +1,2 @@
-CXX_STD = CXX11
-
 PKG_CXXFLAGS = -I../inst/include/
 PKG_CPPFLAGS=-DSTRICT_R_HEADERS
\ No newline at end of file
diff --git a/src/Makevars.win b/src/Makevars.win
index e9668c9..7f94a7d 100644
--- a/src/Makevars.win
+++ b/src/Makevars.win
@@ -1,4 +1,2 @@
-CXX_STD = CXX11
-
 PKG_CXXFLAGS = -I../inst/include/
 PKG_CPPFLAGS=-DSTRICT_R_HEADERS
\ No newline at end of file
diff --git a/tests/testthat/test-from_json.R b/tests/testthat/test-from_json.R
index e648dc7..9b9314a 100644
--- a/tests/testthat/test-from_json.R
+++ b/tests/testthat/test-from_json.R
@@ -19,7 +19,7 @@ test_that("scalar values handled properly", {
 
 test_that("Int64 treated as double", {
   json_str <- '{"value" : 5500000000}'
-  expect_equal(from_json(json_obj)$value, 5.5e+09)
+  expect_equal(from_json(json_str)$value, 5.5e+09)
 })
 
 test_that("vector / array values handled properly", {