diff --git a/package.json b/package.json
index 6c0883c..b00284b 100644
--- a/package.json
+++ b/package.json
@@ -73,7 +73,7 @@
     "invariant": "^2.2.4",
     "katex": "^0.13.11",
     "lodash": "^4.17.21",
-    "netlify-cms-app": "^2.15.27",
+    "netlify-cms-app": "^2.15.28",
     "node-sass": "^6.0.1",
     "normalize-scss": "^7.0.1",
     "prismjs": "^1.24.1",
diff --git a/yarn.lock b/yarn.lock
index 354e2b9..c7c41b0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -13618,10 +13618,10 @@ neo-async@^2.5.0, neo-async@^2.6.1, neo-async@^2.6.2:
   resolved "https://registry.yarnpkg.com/neo-async/-/neo-async-2.6.2.tgz#b4aafb93e3aeb2d8174ca53cf163ab7d7308305f"
   integrity sha512-Yd3UES5mWCSqR+qNT93S3UoYUkqAZ9lLg8a7g9rimsWmYGK8cVToA4/sF3RrshdyV3sAGMXVUmpMYOw+dLpOuw==
 
-netlify-cms-app@^2.15.27:
-  version "2.15.27"
-  resolved "https://registry.yarnpkg.com/netlify-cms-app/-/netlify-cms-app-2.15.27.tgz#d277b7a99299a580875d13a8bef853e8745ad9b5"
-  integrity sha512-8yoEaiN5xR8aeR9uh7S1kN1qfbCShfsTnMQz3gjMxKlHZUntYTzi+zWAO60s/bxCQda1hGA0YVllnx96yintKQ==
+netlify-cms-app@^2.15.28:
+  version "2.15.28"
+  resolved "https://registry.yarnpkg.com/netlify-cms-app/-/netlify-cms-app-2.15.28.tgz#2fde66385a697e3da1132ca8c12c94c1f7751e25"
+  integrity sha512-yPHsl/0/q7senwwW42oSu2hDLtwR3UX3I9+ZeF+OWFHTikw38o9Of6YHOPJgQRnfjVuxSd0nP4CiPBy7od21rA==
   dependencies:
     "@emotion/core" "^10.0.35"
     "@emotion/styled" "^10.0.27"
@@ -13632,7 +13632,7 @@ netlify-cms-app@^2.15.27:
     netlify-cms-backend-azure "^1.2.2"
     netlify-cms-backend-bitbucket "^2.13.3"
     netlify-cms-backend-git-gateway "^2.12.2"
-    netlify-cms-backend-github "^2.13.3"
+    netlify-cms-backend-github "^2.13.4"
     netlify-cms-backend-gitlab "^2.11.4"
     netlify-cms-backend-proxy "^1.2.3"
     netlify-cms-backend-test "^2.11.3"
@@ -13691,10 +13691,10 @@ netlify-cms-backend-git-gateway@^2.12.2:
     jwt-decode "^3.0.0"
     minimatch "^3.0.4"
 
-netlify-cms-backend-github@^2.13.3:
-  version "2.13.3"
-  resolved "https://registry.yarnpkg.com/netlify-cms-backend-github/-/netlify-cms-backend-github-2.13.3.tgz#60a77f4af242c2dee70ad8d6b6dee9eea826e4ff"
-  integrity sha512-AijJbe6UjdUaOWH+g+Je0D8EarzT7JscizAXTnlOL7q6V01EneOErfPdtD+Qc2bqxHterTauIc/RUIygGHn87Q==
+netlify-cms-backend-github@^2.13.4:
+  version "2.13.4"
+  resolved "https://registry.yarnpkg.com/netlify-cms-backend-github/-/netlify-cms-backend-github-2.13.4.tgz#a5adddb888a666b70264ceaab90a0b725319529c"
+  integrity sha512-XKn3oXRlkXxifWJQKQPF17nSdO0fhjtNgDZbeYi/kenwrE9pbJh8Mr9D/wvpA9h/9EZPBNZesvLc2V4+6tXKPg==
   dependencies:
     apollo-cache-inmemory "^1.6.2"
     apollo-client "^2.6.3"