diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6358976e6..91e729409 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -40,8 +40,8 @@ if(IS_CI_BUILD)
     add_compile_options(-DCI_BUILD=1)
 endif()
 
-mason_use(geometry VERSION 0.8.0 HEADER_ONLY)
-mason_use(variant VERSION 1.1.0 HEADER_ONLY)
+mason_use(geometry VERSION 0.9.0 HEADER_ONLY)
+mason_use(variant VERSION 1.1.4 HEADER_ONLY)
 mason_use(unique_resource VERSION dev HEADER_ONLY)
 mason_use(rapidjson VERSION 1.1.0 HEADER_ONLY)
 mason_use(boost VERSION 1.60.0 HEADER_ONLY)
@@ -51,7 +51,7 @@ mason_use(kdbush VERSION 0.1.1 HEADER_ONLY)
 mason_use(earcut VERSION 0.12.1 HEADER_ONLY)
 mason_use(protozero VERSION 1.4.2 HEADER_ONLY)
 mason_use(pixelmatch VERSION 0.10.0 HEADER_ONLY)
-mason_use(geojson VERSION 0.3.2 HEADER_ONLY)
+mason_use(geojson VERSION 0.4.0 HEADER_ONLY)
 mason_use(icu VERSION 58.1)
 
 if(WITH_COVERAGE)
diff --git a/platform/darwin/src/NSExpression+MGLAdditions.mm b/platform/darwin/src/NSExpression+MGLAdditions.mm
index 392a6d7f5..25a2945cf 100644
--- a/platform/darwin/src/NSExpression+MGLAdditions.mm
+++ b/platform/darwin/src/NSExpression+MGLAdditions.mm
@@ -72,7 +72,7 @@
         NSNumber *number = (NSNumber *)value;
         if ((strcmp([number objCType], @encode(char)) == 0) ||
             (strcmp([number objCType], @encode(BOOL)) == 0)) {
-            return mbglValue.get<bool>();
+            return uint64_t(mbglValue.get<bool>());
         } else if ( strcmp([number objCType], @encode(double)) == 0 ||
                     strcmp([number objCType], @encode(float)) == 0) {
             return mbglValue.get<double>();
diff --git a/platform/darwin/test/MGLFeatureTests.mm b/platform/darwin/test/MGLFeatureTests.mm
index 7f464aaab..66b752a73 100644
--- a/platform/darwin/test/MGLFeatureTests.mm
+++ b/platform/darwin/test/MGLFeatureTests.mm
@@ -91,7 +91,7 @@
     mbgl::Point<double> point = { -90.066667, 29.95 };
     mbgl::Feature pointFeature { point };
     pointFeature.id = { UINT64_MAX };
-    pointFeature.properties["null"] = nullptr;
+    pointFeature.properties["null"] = mapbox::geometry::null_value;
     pointFeature.properties["bool"] = true;
     pointFeature.properties["unsigned int"] = UINT64_MAX;
     pointFeature.properties["int"] = INT64_MIN;
diff --git a/platform/macos/config.cmake b/platform/macos/config.cmake
index f602f79d6..1ee1eed22 100644
--- a/platform/macos/config.cmake
+++ b/platform/macos/config.cmake
@@ -82,6 +82,8 @@ endmacro()
 
 
 macro(mbgl_platform_render)
+    set_xcode_property(mbgl-render GCC_SYMBOLS_PRIVATE_EXTERN YES)
+
     target_link_libraries(mbgl-render
         PRIVATE mbgl-loop
         PRIVATE "-framework Foundation"
@@ -95,6 +97,8 @@ endmacro()
 
 
 macro(mbgl_platform_offline)
+    set_xcode_property(mbgl-offline GCC_SYMBOLS_PRIVATE_EXTERN YES)
+
     target_link_libraries(mbgl-offline
         PRIVATE mbgl-loop
         PRIVATE "-framework Foundation"
@@ -108,6 +112,8 @@ endmacro()
 
 
 macro(mbgl_platform_test)
+    set_xcode_property(mbgl-test GCC_SYMBOLS_PRIVATE_EXTERN YES)
+
     target_sources(mbgl-test
         PRIVATE test/src/main.cpp
     )
@@ -130,6 +136,8 @@ macro(mbgl_platform_test)
 endmacro()
 
 macro(mbgl_platform_benchmark)
+    set_xcode_property(mbgl-benchmark GCC_SYMBOLS_PRIVATE_EXTERN YES)
+
     target_sources(mbgl-benchmark
         PRIVATE benchmark/src/main.cpp
     )
@@ -152,6 +160,8 @@ macro(mbgl_platform_benchmark)
 endmacro()
 
 macro(mbgl_platform_node)
+    set_xcode_property(mbgl-node GCC_SYMBOLS_PRIVATE_EXTERN YES)
+
     target_link_libraries(mbgl-node
         PRIVATE "-framework Foundation"
         PRIVATE "-framework OpenGL"
diff --git a/platform/macos/macos.xcodeproj/project.pbxproj b/platform/macos/macos.xcodeproj/project.pbxproj
index 8528ed0be..b38883e91 100644
--- a/platform/macos/macos.xcodeproj/project.pbxproj
+++ b/platform/macos/macos.xcodeproj/project.pbxproj
@@ -1461,6 +1461,7 @@
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				FRAMEWORK_VERSION = A;
+				GCC_SYMBOLS_PRIVATE_EXTERN = YES;
 				HEADER_SEARCH_PATHS = (
 					"$(mbgl_core_INCLUDE_DIRECTORIES)",
 					"$(mbgl_loop_INCLUDE_DIRECTORIES)",
diff --git a/platform/qt/src/qt_conversion.hpp b/platform/qt/src/qt_conversion.hpp
index acb7ed7d5..e49b6dbe3 100644
--- a/platform/qt/src/qt_conversion.hpp
+++ b/platform/qt/src/qt_conversion.hpp
@@ -94,9 +94,9 @@ inline optional<Value> toValue(const QVariant& value) {
     } else if (value.type() == QVariant::Color) {
         return { value.value<QColor>().name().toStdString() };
     } else if (value.type() == QVariant::Int) {
-        return { value.toInt() };
+        return { int64_t(value.toInt()) };
     } else if (value.canConvert(QVariant::Double)) {
-        return { value.toFloat() };
+        return { value.toDouble() };
     } else {
         return {};
     }
diff --git a/src/mbgl/annotation/annotation_tile.hpp b/src/mbgl/annotation/annotation_tile.hpp
index d43ec82d3..bf7307599 100644
--- a/src/mbgl/annotation/annotation_tile.hpp
+++ b/src/mbgl/annotation/annotation_tile.hpp
@@ -31,7 +31,7 @@ public:
 
     FeatureType getType() const override { return type; }
     optional<Value> getValue(const std::string&) const override;
-    optional<FeatureIdentifier> getID() const override { return { id }; }
+    optional<FeatureIdentifier> getID() const override { return { static_cast<uint64_t>(id) }; }
     GeometryCollection getGeometries() const override { return geometries; }
 
     const AnnotationID id;
diff --git a/src/mbgl/map/map.cpp b/src/mbgl/map/map.cpp
index 3b8758f98..8577002c0 100644
--- a/src/mbgl/map/map.cpp
+++ b/src/mbgl/map/map.cpp
@@ -825,7 +825,8 @@ AnnotationIDs Map::queryPointAnnotations(const ScreenBox& box) {
     std::set<AnnotationID> set;
     for (auto &feature : features) {
         assert(feature.id);
-        assert(*feature.id <= std::numeric_limits<AnnotationID>::max());
+        assert(feature.id->is<uint64_t>());
+        assert(feature.id->get<uint64_t>() <= std::numeric_limits<AnnotationID>::max());
         set.insert(static_cast<AnnotationID>(feature.id->get<uint64_t>()));
     }
     AnnotationIDs ids;
diff --git a/test/api/annotations.test.cpp b/test/api/annotations.test.cpp
index a56992bc2..31277718d 100644
--- a/test/api/annotations.test.cpp
+++ b/test/api/annotations.test.cpp
@@ -340,12 +340,12 @@ TEST(Annotations, QueryRenderedFeatures) {
     auto features = test.map.queryRenderedFeatures(test.map.pixelForLatLng({ 0, 0 }));
     EXPECT_EQ(features.size(), 1u);
     EXPECT_TRUE(!!features[0].id);
-    EXPECT_EQ(*features[0].id, 0);
+    EXPECT_EQ(*features[0].id, uint64_t(0));
 
     auto features2 = test.map.queryRenderedFeatures(test.map.pixelForLatLng({ 50, 0 }));
     EXPECT_EQ(features2.size(), 1u);
     EXPECT_TRUE(!!features2[0].id);
-    EXPECT_EQ(*features2[0].id, 1);
+    EXPECT_EQ(*features2[0].id, uint64_t(1));
 }
 
 TEST(Annotations, QueryFractionalZoomLevels) {
diff --git a/test/src/mbgl/test/conversion_stubs.hpp b/test/src/mbgl/test/conversion_stubs.hpp
index b80a2c98b..ddffb1e3b 100644
--- a/test/src/mbgl/test/conversion_stubs.hpp
+++ b/test/src/mbgl/test/conversion_stubs.hpp
@@ -104,7 +104,7 @@ inline optional<mbgl::Value> toValue(const Value& value) {
     } else if (value.is<std::string>()) {
         return { value.get<std::string>() };
     } else if (value.is<float>()) {
-        return { value.get<float>() };
+        return { double(value.get<float>()) };
     } else {
         return {};
     }
diff --git a/test/style/conversion/geojson_options.test.cpp b/test/style/conversion/geojson_options.test.cpp
index dc9be237a..14a7adbba 100644
--- a/test/style/conversion/geojson_options.test.cpp
+++ b/test/style/conversion/geojson_options.test.cpp
@@ -17,7 +17,7 @@ TEST(GeoJSONOptions, Basic) {
 }
 
 TEST(GeoJSONOptions, ErrorHandling) {
-    ValueMap map {{"maxzoom", "should not be a string"}};
+    ValueMap map {{"maxzoom", std::string{"should not be a string"}}};
     Value raw(map);
     Result<GeoJSONOptions> converted = convert<GeoJSONOptions>(raw);
     ASSERT_FALSE((bool) converted);
@@ -44,14 +44,14 @@ TEST(GeoJSONOptions, RetainsDefaults) {
 TEST(GeoJSONOptions, FullConversion) {
     ValueMap map {
         //GeoJSON-VT
-        {"maxzoom", 1},
-        {"buffer", 2},
-        {"tolerance", 3},
+        {"maxzoom", 1.0f},
+        {"buffer", 2.0f},
+        {"tolerance", 3.0f},
         
         //Supercluster
         {"cluster", true},
-        {"clusterRadius", 4},
-        {"clusterMaxZoom", 5}
+        {"clusterRadius", 4.0f},
+        {"clusterMaxZoom", 5.0f}
     };
     Value raw(map);
     GeoJSONOptions converted = *convert<GeoJSONOptions>(raw);
diff --git a/test/style/filter.test.cpp b/test/style/filter.test.cpp
index b49f424a3..33b64978f 100644
--- a/test/style/filter.test.cpp
+++ b/test/style/filter.test.cpp
@@ -42,7 +42,7 @@ TEST(Filter, EqualsNumber) {
     ASSERT_FALSE(f(feature({{ "foo", std::string("0") }})));
     ASSERT_FALSE(f(feature({{ "foo", false }})));
     ASSERT_FALSE(f(feature({{ "foo", true }})));
-    ASSERT_FALSE(f(feature({{ "foo", nullptr }})));
+    ASSERT_FALSE(f(feature({{ "foo", mapbox::geometry::null_value }})));
     ASSERT_FALSE(f(feature({{}})));
 }
 
@@ -113,13 +113,13 @@ TEST(Filter, NotHas) {
 
 TEST(Filter, ID) {
     Feature feature1 { Point<double>() };
-    feature1.id = { 1234 };
+    feature1.id = { uint64_t(1234) };
 
     ASSERT_TRUE(parse("[\"==\", \"$id\", 1234]")(feature1));
     ASSERT_FALSE(parse("[\"==\", \"$id\", \"1234\"]")(feature1));
 
     Feature feature2 { Point<double>() };
-    feature2.properties["id"] = { 1234 };
+    feature2.properties["id"] = { uint64_t(1234) };
 
     ASSERT_FALSE(parse("[\"==\", \"$id\", 1234]")(feature2));
 }