diff --git a/packages/gatsby-remark-copy-linked-files/package.json b/packages/gatsby-remark-copy-linked-files/package.json
index 32792784288c1..94d6e046426f7 100644
--- a/packages/gatsby-remark-copy-linked-files/package.json
+++ b/packages/gatsby-remark-copy-linked-files/package.json
@@ -22,7 +22,7 @@
     "babel-preset-gatsby-package": "^0.5.3",
     "cross-env": "^7.0.2",
     "remark": "^10.0.1",
-    "remark-mdx": "^1.6.6"
+    "remark-mdx": "^1.6.18"
   },
   "homepage": "https://github.com/gatsbyjs/gatsby/tree/master/packages/gatsby-remark-copy-linked-files#readme",
   "keywords": [
diff --git a/yarn.lock b/yarn.lock
index 654550c4807ec..a03eb768e005c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -94,7 +94,7 @@
     semver "^5.4.1"
     source-map "^0.5.0"
 
-"@babel/core@^7.1.0", "@babel/core@^7.1.6", "@babel/core@^7.10.2", "@babel/core@^7.11.6", "@babel/core@^7.7.5", "@babel/core@^7.9.0":
+"@babel/core@7.11.6", "@babel/core@^7.1.0", "@babel/core@^7.1.6", "@babel/core@^7.10.2", "@babel/core@^7.11.6", "@babel/core@^7.7.5", "@babel/core@^7.9.0":
   version "7.11.6"
   resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.11.6.tgz#3a9455dc7387ff1bac45770650bc13ba04a15651"
   integrity sha512-Wpcv03AGnmkgm6uS6k8iwhIwTrcP0m17TL1n1sy7qD0qelDu4XNeW0dN0mHfa+Gei211yDaLoEe/VlbXQzM4Bg==
@@ -499,7 +499,7 @@
     "@babel/plugin-syntax-object-rest-spread" "^7.8.0"
     "@babel/plugin-transform-parameters" "^7.10.4"
 
-"@babel/plugin-proposal-object-rest-spread@^7.11.0":
+"@babel/plugin-proposal-object-rest-spread@7.11.0", "@babel/plugin-proposal-object-rest-spread@^7.11.0":
   version "7.11.0"
   resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-object-rest-spread/-/plugin-proposal-object-rest-spread-7.11.0.tgz#bd81f95a1f746760ea43b6c2d3d62b11790ad0af"
   integrity sha512-wzch41N4yztwoRw0ak+37wxwJM2oiIiy6huGCoqkvSTA9acYWcPfn9Y4aJqmFFJ70KTJUu29f3DQ43uJ9HXzEA==
@@ -2746,6 +2746,11 @@
   resolved "https://registry.yarnpkg.com/@mdx-js/util/-/util-1.6.16.tgz#07a7342f6b61ea1ecbfb31e6e23bf7a8c79b9b57"
   integrity sha512-SFtLGIGZummuyMDPRL5KdmpgI8U19Ble28UjEWihPjGxF1Lgj8aDjLWY8KiaUy9eqb9CKiVCqEIrK9jbnANfkw==
 
+"@mdx-js/util@1.6.18":
+  version "1.6.18"
+  resolved "https://registry.yarnpkg.com/@mdx-js/util/-/util-1.6.18.tgz#c7563bf72cb4520b8b7100b64006a64be717e936"
+  integrity sha512-axMe+NoLF55OlXPbhRn4GNCHcL1f5W3V3c0dWzg05S9JXm3Ecpxzxaht3g3vTP0dcqBL/yh/xCvzK0ZpO54Eug==
+
 "@mdx-js/util@^2.0.0-next.7":
   version "2.0.0-next.7"
   resolved "https://registry.yarnpkg.com/@mdx-js/util/-/util-2.0.0-next.7.tgz#b1c52e7622917d7601b2c9ba2f132aaf8d4224fc"
@@ -20747,7 +20752,7 @@ remark-math@^1.0.6:
   dependencies:
     trim-trailing-lines "^1.1.0"
 
-remark-mdx@1.6.16, remark-mdx@^1.6.6:
+remark-mdx@1.6.16:
   version "1.6.16"
   resolved "https://registry.yarnpkg.com/remark-mdx/-/remark-mdx-1.6.16.tgz#13ee40ad0614a1cc179aca3604d7f1b79e498a2f"
   integrity sha512-xqZhBQ4TonFiSFpVt6SnTLRnxstu7M6pcaOibKZhqzk4zMRVacVenD7iECjfESK+72LkPm/NW+0r5ahJAg7zlQ==
@@ -20761,6 +20766,20 @@ remark-mdx@1.6.16, remark-mdx@^1.6.6:
     remark-parse "8.0.3"
     unified "9.1.0"
 
+remark-mdx@^1.6.18, remark-mdx@^1.6.6:
+  version "1.6.18"
+  resolved "https://registry.yarnpkg.com/remark-mdx/-/remark-mdx-1.6.18.tgz#d8c76017c95824cc7fb853bb2759add8ba0cf319"
+  integrity sha512-xNhjv4kJZ8L6RV68yK8fQ6XWlvSIFOE5VPmM7wMKSwkvwBu6tlUJy0gRF2WiZ4fPPOj6jpqlVB9QakipvZuEqg==
+  dependencies:
+    "@babel/core" "7.11.6"
+    "@babel/helper-plugin-utils" "7.10.4"
+    "@babel/plugin-proposal-object-rest-spread" "7.11.0"
+    "@babel/plugin-syntax-jsx" "7.10.4"
+    "@mdx-js/util" "1.6.18"
+    is-alphabetical "1.0.4"
+    remark-parse "8.0.3"
+    unified "9.2.0"
+
 remark-mdx@^2.0.0-next.4, remark-mdx@^2.0.0-next.7:
   version "2.0.0-next.7"
   resolved "https://registry.yarnpkg.com/remark-mdx/-/remark-mdx-2.0.0-next.7.tgz#e8d4e4fe2c2a98bb34e10304c6e6f2823ba56dfb"
@@ -24358,7 +24377,7 @@ unified@9.0.0:
     trough "^1.0.0"
     vfile "^4.0.0"
 
-unified@9.1.0, unified@^9.0.0:
+unified@9.1.0:
   version "9.1.0"
   resolved "https://registry.yarnpkg.com/unified/-/unified-9.1.0.tgz#7ba82e5db4740c47a04e688a9ca8335980547410"
   integrity sha512-VXOv7Ic6twsKGJDeZQ2wwPqXs2hM0KNu5Hkg9WgAZbSD1pxhZ7p8swqg583nw1Je2fhwHy6U8aEjiI79x1gvag==
@@ -24370,6 +24389,18 @@ unified@9.1.0, unified@^9.0.0:
     trough "^1.0.0"
     vfile "^4.0.0"
 
+unified@9.2.0, unified@^9.0.0, unified@^9.2.0:
+  version "9.2.0"
+  resolved "https://registry.yarnpkg.com/unified/-/unified-9.2.0.tgz#67a62c627c40589edebbf60f53edfd4d822027f8"
+  integrity sha512-vx2Z0vY+a3YoTj8+pttM3tiJHCwY5UFbYdiWrwBEbHmK8pvsPj2rtAX2BFfgXen8T39CJWblWRDT4L5WGXtDdg==
+  dependencies:
+    bail "^1.0.0"
+    extend "^3.0.0"
+    is-buffer "^2.0.0"
+    is-plain-obj "^2.0.0"
+    trough "^1.0.0"
+    vfile "^4.0.0"
+
 unified@^4.1.1:
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/unified/-/unified-4.2.1.tgz#76ff43aa8da430f6e7e4a55c84ebac2ad2cfcd2e"
@@ -24416,18 +24447,6 @@ unified@^8.0.0, unified@^8.4.2:
     trough "^1.0.0"
     vfile "^4.0.0"
 
-unified@^9.2.0:
-  version "9.2.0"
-  resolved "https://registry.yarnpkg.com/unified/-/unified-9.2.0.tgz#67a62c627c40589edebbf60f53edfd4d822027f8"
-  integrity sha512-vx2Z0vY+a3YoTj8+pttM3tiJHCwY5UFbYdiWrwBEbHmK8pvsPj2rtAX2BFfgXen8T39CJWblWRDT4L5WGXtDdg==
-  dependencies:
-    bail "^1.0.0"
-    extend "^3.0.0"
-    is-buffer "^2.0.0"
-    is-plain-obj "^2.0.0"
-    trough "^1.0.0"
-    vfile "^4.0.0"
-
 union-value@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/union-value/-/union-value-1.0.1.tgz#0b6fe7b835aecda61c6ea4d4f02c14221e109847"