diff --git a/tests/gl-cases/glLines.js b/tests/gl-cases/glLines.js
index dd109d0429..61d3d2da78 100644
--- a/tests/gl-cases/glLines.js
+++ b/tests/gl-cases/glLines.js
@@ -140,7 +140,9 @@ describe('glLines', function () {
 
     myMap.draw();
 
-    imageTest.imageTest('glLinesOpts', null, 0.0015, done, myMap.onIdle, 0, 2);
+    // maximum error is 0.0030 because of a change in Chrome 65.  When new
+    // versions are released, see if this can be moved back to 0.0015
+    imageTest.imageTest('glLinesOpts', null, 0.0030, done, myMap.onIdle, 0, 2);
 
   }, 10000);
 });
diff --git a/tests/gl-cases/glPolygons.js b/tests/gl-cases/glPolygons.js
index a62e8868ec..4f81639b20 100644
--- a/tests/gl-cases/glPolygons.js
+++ b/tests/gl-cases/glPolygons.js
@@ -2446,7 +2446,9 @@ describe('glPolygons', function () {
       layer: layer
     }).read(JSON.stringify(data), function () {
       myMap.draw();
-      imageTest.imageTest('glMultiPolygons', null, 0.0015, done, myMap.onIdle, 0, 2);
+      // maximum error is 0.0030 because of a change in Chrome 65.  When new
+      // versions are released, see if this can be moved back to 0.0015
+      imageTest.imageTest('glMultiPolygons', null, 0.0030, done, myMap.onIdle, 0, 2);
     });
   });
 
diff --git a/tests/headed-cases/lines.js b/tests/headed-cases/lines.js
index c6c8673198..7546cfe40d 100644
--- a/tests/headed-cases/lines.js
+++ b/tests/headed-cases/lines.js
@@ -15,7 +15,9 @@ describe('lines example', function () {
   it('more lines', function (done) {
     base$ = $('iframe#map')[0].contentWindow.jQuery;
     base$('#lines').val(100000).trigger('change');
-    imageTest.imageTest('exampleLines100k', '#map', 0.0015, done, null, 0, 2, '#map.ready[segments="100000"]');
+    // maximum error is 0.0030 because of a change in Chrome 65.  When new
+    // versions are released, see if this can be moved back to 0.0015
+    imageTest.imageTest('exampleLines100k', '#map', 0.0030, done, null, 0, 2, '#map.ready[segments="100000"]');
   }, 10000);
   it('thin preset', function (done) {
     base$('button.preset').eq(1).trigger('click');