diff --git a/ghost/email-service/package.json b/ghost/email-service/package.json
index b26d2a3f82..817e1ce450 100644
--- a/ghost/email-service/package.json
+++ b/ghost/email-service/package.json
@@ -19,7 +19,7 @@
   ],
   "devDependencies": {
     "c8": "8.0.1",
-    "html-validate": "8.5.0",
+    "html-validate": "8.6.0",
     "mocha": "10.2.0",
     "should": "13.2.3",
     "sinon": "15.2.0"
diff --git a/yarn.lock b/yarn.lock
index 479d81ff33..a8ff87b919 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -14272,16 +14272,16 @@ deep-is@^0.1.3, deep-is@~0.1.3:
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.4.tgz#a6f2dce612fadd2ef1f519b73551f17e85199831"
   integrity sha512-oIPzksmTg4/MriiaYGO+okXDT7ztn/w3Eptv/+gSIdMdKsJo0u4CfYNFJPy+4SKMuCqGw2wxnA+URMg3t8a/bQ==
 
+deepmerge@4.3.1, deepmerge@^4.0.0, deepmerge@^4.2.2, deepmerge@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-4.3.1.tgz#44b5f2147cd3b00d4b56137685966f26fd25dd4a"
+  integrity sha512-3sUqbMEc77XqpdNO7FRyRog+eW3ph+GYCbj+rK+uYyRMuwsVy0rMiVtPn+QJlKFvWP/1PYpapqYn0Me2knFn+A==
+
 deepmerge@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-2.2.1.tgz#5d3ff22a01c00f645405a2fbc17d0778a1801170"
   integrity sha512-R9hc1Xa/NOBi9WRVUWg19rl1UB7Tt4kuPd+thNJgFZoxXsTz7ncaPaeIm+40oSGuP33DfMb4sZt1QIGiJzC4EA==
 
-deepmerge@^4.0.0, deepmerge@^4.2.0, deepmerge@^4.2.2, deepmerge@^4.3.1:
-  version "4.3.1"
-  resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-4.3.1.tgz#44b5f2147cd3b00d4b56137685966f26fd25dd4a"
-  integrity sha512-3sUqbMEc77XqpdNO7FRyRog+eW3ph+GYCbj+rK+uYyRMuwsVy0rMiVtPn+QJlKFvWP/1PYpapqYn0Me2knFn+A==
-
 default-browser-id@3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/default-browser-id/-/default-browser-id-3.0.0.tgz#bee7bbbef1f4e75d31f98f4d3f1556a14cea790c"
@@ -19339,18 +19339,18 @@ html-to-text@8.2.1:
     minimist "^1.2.6"
     selderee "^0.6.0"
 
-html-validate@8.5.0:
-  version "8.5.0"
-  resolved "https://registry.yarnpkg.com/html-validate/-/html-validate-8.5.0.tgz#187eb0d086b9a64c6b91866844b30c97c47b44fb"
-  integrity sha512-EiRJ7mqRZb68DgxyMlA+5uVheCuNYZiXnoSajcdSTK8IcNuPpyeSI0CZu9wK1jE6jQrWnf8myIa5JkjDByHPuw==
+html-validate@8.6.0:
+  version "8.6.0"
+  resolved "https://registry.yarnpkg.com/html-validate/-/html-validate-8.6.0.tgz#f31e49cd7f0453b7a89501899a6e51a700b33ca4"
+  integrity sha512-L186osODan97eR2/W64avOhORyjttA+G6XrVaO5OfmFOI/VKZtT1iMKOOcozetfuJ8EGLNbEPq6mk0QJ0XRP1A==
   dependencies:
     "@babel/code-frame" "^7.10.0"
     "@html-validate/stylish" "^4.1.0"
     "@sidvind/better-ajv-errors" "^2.0.0"
     ajv "^8.0.0"
-    deepmerge "^4.2.0"
+    deepmerge "4.3.1"
     glob "^10.0.0"
-    ignore "^5.0.0"
+    ignore "5.2.4"
     kleur "^4.1.0"
     minimist "^1.2.0"
     prompts "^2.0.0"
@@ -19675,16 +19675,16 @@ iferr@^0.1.5:
   resolved "https://registry.yarnpkg.com/iferr/-/iferr-0.1.5.tgz#c60eed69e6d8fdb6b3104a1fcbca1c192dc5b501"
   integrity sha512-DUNFN5j7Tln0D+TxzloUjKB+CtVu6myn0JEFak6dG18mNt9YkQ6lzGCdafwofISZ1lLF3xRHJ98VKy9ynkcFaA==
 
+ignore@5.2.4, ignore@^5.0.4, ignore@^5.1.1, ignore@^5.1.8, ignore@^5.2.0, ignore@^5.2.4:
+  version "5.2.4"
+  resolved "https://registry.yarnpkg.com/ignore/-/ignore-5.2.4.tgz#a291c0c6178ff1b960befe47fcdec301674a6324"
+  integrity sha512-MAb38BcSbH0eHNBxn7ql2NH/kX33OkB3lZ1BNdh7ENeRChHTYsTvWrMubiIAMNS2llXEEgZ1MUOBtXChP3kaFQ==
+
 ignore@^4.0.6:
   version "4.0.6"
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-4.0.6.tgz#750e3db5862087b4737ebac8207ffd1ef27b25fc"
   integrity sha512-cyFDKrqc/YdcWFniJhzI42+AzS+gNwmUzOSFcRCQYwySuBBBy/KjuxWLZ/FHEH6Moq1NizMOBWyTcv8O4OZIMg==
 
-ignore@^5.0.0, ignore@^5.0.4, ignore@^5.1.1, ignore@^5.1.8, ignore@^5.2.0, ignore@^5.2.4:
-  version "5.2.4"
-  resolved "https://registry.yarnpkg.com/ignore/-/ignore-5.2.4.tgz#a291c0c6178ff1b960befe47fcdec301674a6324"
-  integrity sha512-MAb38BcSbH0eHNBxn7ql2NH/kX33OkB3lZ1BNdh7ENeRChHTYsTvWrMubiIAMNS2llXEEgZ1MUOBtXChP3kaFQ==
-
 image-extensions@~1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/image-extensions/-/image-extensions-1.1.0.tgz#b8e6bf6039df0056e333502a00b6637a3105d894"