diff --git a/yarn.lock b/yarn.lock
index d758942e..e13f17a1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2232,8 +2232,8 @@ configstore@^3.0.0:
     xdg-basedir "^3.0.0"
 
 connect-history-api-fallback@^1.3.0:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/connect-history-api-fallback/-/connect-history-api-fallback-1.4.0.tgz#3db24f973f4b923b0e82f619ce0df02411ca623d"
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/connect-history-api-fallback/-/connect-history-api-fallback-1.5.0.tgz#b06873934bc5e344fef611a196a6faae0aee015a"
 
 console-browserify@^1.1.0:
   version "1.1.0"
@@ -3998,7 +3998,21 @@ gatsby-plugin-react-next@^1.0.3:
     react "^16.0.0"
     react-dom "^16.0.0"
 
-gatsby-plugin-sharp@^1.6.2, gatsby-plugin-sharp@^1.6.20:
+gatsby-plugin-sharp@^1.6.2:
+  version "1.6.8"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-sharp/-/gatsby-plugin-sharp-1.6.8.tgz#289f11f3f54c5cdd51f78f17403b8f318fd68cfa"
+  dependencies:
+    async "^2.1.2"
+    babel-runtime "^6.26.0"
+    bluebird "^3.5.0"
+    image-size "^0.5.1"
+    imagemin "^5.2.2"
+    imagemin-pngquant "^5.0.0"
+    lodash "^4.17.4"
+    progress "^1.1.8"
+    sharp "^0.17.3"
+
+gatsby-plugin-sharp@^1.6.20:
   version "1.6.20"
   resolved "https://registry.yarnpkg.com/gatsby-plugin-sharp/-/gatsby-plugin-sharp-1.6.20.tgz#5bd14a0b840485ccf71964c83832cf749827bd67"
   dependencies:
@@ -4039,8 +4053,8 @@ gatsby-remark-autolink-headers@^1.4.4:
     unist-util-visit "^1.1.1"
 
 gatsby-remark-copy-linked-files@^1.5.2:
-  version "1.5.17"
-  resolved "https://registry.yarnpkg.com/gatsby-remark-copy-linked-files/-/gatsby-remark-copy-linked-files-1.5.17.tgz#81753df410f72fe3ab759d1b72c44d8e59cb7b27"
+  version "1.5.18"
+  resolved "https://registry.yarnpkg.com/gatsby-remark-copy-linked-files/-/gatsby-remark-copy-linked-files-1.5.18.tgz#ff7932922fd1b1696695bb174f8ecc743097d9a0"
   dependencies:
     babel-runtime "^6.26.0"
     cheerio "^1.0.0-rc.2"
@@ -4130,12 +4144,12 @@ gatsby-transformer-remark@^1.7.2:
     unist-util-visit "^1.1.1"
 
 gatsby-transformer-sharp@^1.6.1:
-  version "1.6.13"
-  resolved "https://registry.yarnpkg.com/gatsby-transformer-sharp/-/gatsby-transformer-sharp-1.6.13.tgz#66daa184951710290a748896d72deb0979c454bb"
+  version "1.6.6"
+  resolved "https://registry.yarnpkg.com/gatsby-transformer-sharp/-/gatsby-transformer-sharp-1.6.6.tgz#2ad1e4e6702d6f317fb0277941fdfb8d82f06494"
   dependencies:
     babel-runtime "^6.26.0"
     bluebird "^3.5.0"
-    fs-extra "^4.0.2"
+    fs-extra "^4.0.1"
     image-size "^0.6.0"
 
 gatsby@^1.9.9: