diff --git a/CHANGELOG.md b/CHANGELOG.md
index 969fdfc..2e503df 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.16.6
+
+* Upgrade Wagyu to 0.3.0; downgrade C++ requirement to C++ 11
+
 ## 1.16.5
 
 * Add -z and -Z options to tippecanoe-decode
diff --git a/Makefile b/Makefile
index 6485f88..12b3a2d 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@ SHELL = /bin/bash
 CC := $(CC)
 CXX := $(CXX)
 CFLAGS := $(CFLAGS)
-CXXFLAGS := $(CXXFLAGS) -std=c++14
+CXXFLAGS := $(CXXFLAGS) -std=c++11
 LDFLAGS := $(LDFLAGS)
 WARNING_FLAGS := -Wall -Wshadow -Wsign-compare
 RELEASE_FLAGS := -O3 -DNDEBUG
diff --git a/README.md b/README.md
index 6faf15e..5162d2f 100644
--- a/README.md
+++ b/README.md
@@ -279,7 +279,7 @@ and perhaps
 
     make install
 
-Tippecanoe now requires features from the 2014 C++ standard. If your compiler is older than
+Tippecanoe now requires features from the 2011 C++ standard. If your compiler is older than
 that, you will need to install a newer one. On MacOS, updating to the lastest XCode should
 get you a new enough version of `clang++`. On Linux, you should be able to upgrade `g++` with
 
diff --git a/geometry.cpp b/geometry.cpp
index b8858cc..51e1a9a 100644
--- a/geometry.cpp
+++ b/geometry.cpp
@@ -9,7 +9,8 @@
 #include <cmath>
 #include <limits.h>
 #include <sqlite3.h>
-#include <mapbox/geometry.hpp>
+#include <mapbox/geometry/point.hpp>
+#include <mapbox/geometry/multi_polygon.hpp>
 #include <mapbox/geometry/wagyu/wagyu.hpp>
 #include <mapbox/geometry/wagyu/quick_clip.hpp>
 #include "geometry.hpp"
@@ -445,19 +446,19 @@ drawvec simple_clip_poly(drawvec &geom, long long minx, long long miny, long lon
 				ring.push_back(mapbox::geometry::point<long long>(geom[k].x, geom[k].y));
 			}
 
-			optional_linear_ring<long long> lr = mapbox::geometry::wagyu::quick_clip::quick_lr_clip(ring, bbox);
+			mapbox::geometry::linear_ring<long long> lr = mapbox::geometry::wagyu::quick_clip::quick_lr_clip(ring, bbox);
 
-			if (lr) {
-				for (size_t k = 0; k < lr->size(); k++) {
+			if (lr.size() > 0) {
+				for (size_t k = 0; k < lr.size(); k++) {
 					if (k == 0) {
-						out.push_back(draw(VT_MOVETO, (*lr)[k].x, (*lr)[k].y));
+						out.push_back(draw(VT_MOVETO, lr[k].x, lr[k].y));
 					} else {
-						out.push_back(draw(VT_LINETO, (*lr)[k].x, (*lr)[k].y));
+						out.push_back(draw(VT_LINETO, lr[k].x, lr[k].y));
 					}
 				}
 
-				if (lr->size() > 0 && (*lr)[0] != (*lr)[lr->size() - 1]) {
-					out.push_back(draw(VT_LINETO, (*lr)[0].x, (*lr)[0].y));
+				if (lr.size() > 0 && lr[0] != lr[lr.size() - 1]) {
+					out.push_back(draw(VT_LINETO, lr[0].x, lr[0].y));
 				}
 			}
 
diff --git a/man/tippecanoe.1 b/man/tippecanoe.1
index 90d5ede..2c8efba 100644
--- a/man/tippecanoe.1
+++ b/man/tippecanoe.1
@@ -335,7 +335,7 @@ make install
 .fi
 .RE
 .PP
-Tippecanoe now requires features from the 2014 C++ standard. If your compiler is older than
+Tippecanoe now requires features from the 2011 C++ standard. If your compiler is older than
 that, you will need to install a newer one. On MacOS, updating to the lastest XCode should
 get you a new enough version of \fB\fCclang++\fR\&. On Linux, you should be able to upgrade \fB\fCg++\fR with
 .PP
diff --git a/mapbox/geometry/wagyu/quick_clip.hpp b/mapbox/geometry/wagyu/quick_clip.hpp
index 9153bef..56506fa 100644
--- a/mapbox/geometry/wagyu/quick_clip.hpp
+++ b/mapbox/geometry/wagyu/quick_clip.hpp
@@ -5,11 +5,6 @@
 #include <mapbox/geometry/polygon.hpp>
 #include <mapbox/geometry/wagyu/wagyu.hpp>
 
-#include <experimental/optional>
-
-template <typename T>
-using optional_linear_ring = std::experimental::optional<mapbox::geometry::linear_ring<T>>;
-
 namespace mapbox {
 namespace geometry {
 namespace wagyu {
@@ -61,7 +56,7 @@ bool inside(mapbox::geometry::point<T> p, size_t edge, mapbox::geometry::box<T>
 }
 
 template <typename T>
-optional_linear_ring<T> quick_lr_clip(mapbox::geometry::linear_ring<T> const& ring,
+mapbox::geometry::linear_ring<T> quick_lr_clip(mapbox::geometry::linear_ring<T> const& ring,
                                       mapbox::geometry::box<T> const& b) {
     mapbox::geometry::linear_ring<T> out = ring;
 
@@ -89,13 +84,14 @@ optional_linear_ring<T> quick_lr_clip(mapbox::geometry::linear_ring<T> const& ri
     }
 
     if (out.size() < 3) {
-        return optional_linear_ring<T>();
+        out.clear();
+        return out;
     }
     // Close the ring if the first/last point was outside
     if (out[0] != out[out.size() - 1]) {
         out.push_back(out[0]);
     }
-    return optional_linear_ring<T>(std::move(out));
+    return out;
 }
 }
 
@@ -107,8 +103,8 @@ mapbox::geometry::multi_polygon<T> clip(mapbox::geometry::polygon<T> const& poly
     wagyu<T> clipper;
     for (auto const& lr : poly) {
         auto new_lr = quick_clip::quick_lr_clip(lr, b);
-        if (new_lr) {
-            clipper.add_ring(*new_lr, polygon_type_subject);
+        if (!new_lr.empty()) {
+            clipper.add_ring(new_lr, polygon_type_subject);
         }
     }
     clipper.execute(clip_type_union, result, subject_fill_type, fill_type_even_odd);
@@ -124,8 +120,8 @@ mapbox::geometry::multi_polygon<T> clip(mapbox::geometry::multi_polygon<T> const
     for (auto const& poly : mp) {
         for (auto const& lr : poly) {
             auto new_lr = quick_clip::quick_lr_clip(lr, b);
-            if (new_lr) {
-                clipper.add_ring(*new_lr, polygon_type_subject);
+            if (!new_lr.empty()) {
+                clipper.add_ring(new_lr, polygon_type_subject);
             }
         }
     }
diff --git a/mapbox/geometry/wagyu/wagyu.hpp b/mapbox/geometry/wagyu/wagyu.hpp
index 7c4020f..21fde80 100644
--- a/mapbox/geometry/wagyu/wagyu.hpp
+++ b/mapbox/geometry/wagyu/wagyu.hpp
@@ -15,6 +15,12 @@
 #include <mapbox/geometry/wagyu/topology_correction.hpp>
 #include <mapbox/geometry/wagyu/vatti.hpp>
 
+#define WAGYU_MAJOR_VERSION 0
+#define WAGYU_MINOR_VERSION 3
+#define WAGYU_PATCH_VERSION 0
+
+#define WAGYU_VERSION (WAGYU_MAJOR_VERSION * 100000) + (WAGYU_MINOR_VERSION * 100) + (WAGYU_PATCH_VERSION)
+
 namespace mapbox {
 namespace geometry {
 namespace wagyu {
diff --git a/version.hpp b/version.hpp
index 34febff..d4ddcec 100644
--- a/version.hpp
+++ b/version.hpp
@@ -1 +1 @@
-#define VERSION "tippecanoe v1.16.5\n"
+#define VERSION "tippecanoe v1.16.6\n"