diff --git a/package.json b/package.json
index fc68d09..3c686f1 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
     "jquery": "3.0.0-alpha1",
     "express": "4.1.1",
     "boom": "",
-    "tinymce": "4.2.3",
+    "tinymce": "5.10.9",
     "console-io": "2.6.3",
     "angular": "1.3.19",
     "nodejs-repo-tools": "git+https://github.com/GoogleCloudPlatform/nodejs-repo-tools.git#bbbb6035d77671eb053dbe6b6f0e3ff983f79639",
diff --git a/yarn.lock b/yarn.lock
index 37257f2..00f2418 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2074,9 +2074,10 @@ timem@~1.1.0:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/timem/-/timem-1.1.2.tgz#fe93006c28253a8da5c49299306991fa4cc4f40c"
 
-tinymce@4.2.3:
-  version "4.2.3"
-  resolved "https://registry.yarnpkg.com/tinymce/-/tinymce-4.2.3.tgz#8d742fdc17026fac53e779a1a63ec2756e38965d"
+tinymce@5.10.9:
+  version "5.10.9"
+  resolved "https://registry.yarnpkg.com/tinymce/-/tinymce-5.10.9.tgz#1dfacb3231c71a688d90ff44a0b3f2e91b3b9edf"
+  integrity sha512-5bkrors87X9LhYX2xq8GgPHrIgJYHl87YNs+kBcjQ5I3CiUgzo/vFcGvT3MZQ9QHsEeYMhYO6a5CLGGffR8hMg==
 
 to-array@0.1.4:
   version "0.1.4"