diff --git a/yarn.lock b/yarn.lock
index f5d40b2..040cb2d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -771,9 +771,9 @@ acorn-walk@^6.0.1:
   integrity sha512-7evsyfH1cLOCdAzZAd43Cic04yKydNx0cF+7tiA19p1XnLLPU4dpCQOqpjqwokFe//vS0QqfqqjCS2JkiIs0cA==
 
 acorn@^5.0.0:
-  version "5.7.3"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.3.tgz#67aa231bf8812974b85235a96771eb6bd07ea279"
-  integrity sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==
+  version "5.7.4"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.4.tgz#3e8d8a9947d0599a1796d10225d7432f4a4acf5e"
+  integrity sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg==
 
 acorn@^6.0.1, acorn@^6.0.4:
   version "6.3.0"
@@ -1834,8 +1834,10 @@ d3-format@1:
   integrity sha512-TUswGe6hfguUX1CtKxyG2nymO+1lyThbkS1ifLX0Sr+dOQtAD5gkrffpHnx+yHNKUZ0Bmg5T4AjUQwugPDrm0g==
 
 "d3-geo-polygon@link:./src/vendor/d3-geo-polygon":
-  version "0.0.0"
-  uid ""
+  version "1.8.2"
+  dependencies:
+    d3-array "1 - 2"
+    d3-geo "^1.11.1"
 
 d3-geo-projection@^2.7.0:
   version "2.7.0"