diff --git a/packages/test-utils/package.json b/packages/test-utils/package.json
index af0683f0..de16bfd0 100644
--- a/packages/test-utils/package.json
+++ b/packages/test-utils/package.json
@@ -5,7 +5,7 @@
   "main": "src/index.ts",
   "dependencies": {
     "chalk": "^4.0.0",
-    "emphasize": "^3.0.0",
+    "emphasize": "^4.2.0",
     "indent-string": "^4.0.0",
     "sinon": "^8.0.4"
   }
diff --git a/yarn.lock b/yarn.lock
index 7bd614bc..99976936 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2030,14 +2030,6 @@ chalk@2.4.2, chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0, chalk@^2.3.1, chalk@^2.4.
     escape-string-regexp "^1.0.5"
     supports-color "^5.3.0"
 
-chalk@^3.0.0, chalk@~3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/chalk/-/chalk-3.0.0.tgz#3f73c2bf526591f574cc492c51e2456349f844e4"
-  integrity sha512-4D3B6Wf41KOYRFdszmDqMCGq5VV/uMAB273JILmO+3jAlh8X4qDtdtgCR3fxtbLEMzSx22QdhnDcJvu2u1fVwg==
-  dependencies:
-    ansi-styles "^4.1.0"
-    supports-color "^7.1.0"
-
 chalk@^4.0.0, chalk@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-4.1.0.tgz#4e14870a618d9e2edd97dd8345fd9d9dc315646a"
@@ -2046,6 +2038,14 @@ chalk@^4.0.0, chalk@^4.1.0:
     ansi-styles "^4.1.0"
     supports-color "^7.1.0"
 
+chalk@~3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-3.0.0.tgz#3f73c2bf526591f574cc492c51e2456349f844e4"
+  integrity sha512-4D3B6Wf41KOYRFdszmDqMCGq5VV/uMAB273JILmO+3jAlh8X4qDtdtgCR3fxtbLEMzSx22QdhnDcJvu2u1fVwg==
+  dependencies:
+    ansi-styles "^4.1.0"
+    supports-color "^7.1.0"
+
 chardet@^0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.7.0.tgz#90094849f0937f2eedc2425d0d28a9e5f0cbad9e"
@@ -2829,14 +2829,14 @@ emoji-regex@^8.0.0:
   resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-8.0.0.tgz#e818fd69ce5ccfcb404594f842963bf53164cc37"
   integrity sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==
 
-emphasize@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/emphasize/-/emphasize-3.0.0.tgz#352f5dc2b775609fac9b18916fcaea35b7bfae7e"
-  integrity sha512-xhtAWvxdkxsQbcCLGVjlfB7cQ4bWSPYXeaGDwK5Bl7n2y/9R+MVK5UNBTmZ9N8m/YShsiyGgQBgFGcjOWCWXHQ==
+emphasize@^4.2.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/emphasize/-/emphasize-4.2.0.tgz#6b6fdc4d212cb7eafea1c7cdd595dfd6cfc508d9"
+  integrity sha512-yGKvcFUHlBsUPwlxTlzKLR8+zhpbitkFOMCUxN8fTJng9bdH3WNzUGkhdaGdjndSUgqmMPBN7umfwnUdLz5Axg==
   dependencies:
-    chalk "^3.0.0"
-    highlight.js "~9.12.0"
-    lowlight "~1.9.0"
+    chalk "^4.0.0"
+    highlight.js "~10.4.0"
+    lowlight "~1.17.0"
 
 encoding@^0.1.11:
   version "0.1.12"
@@ -3266,7 +3266,7 @@ fast-levenshtein@~2.0.6:
   resolved "https://registry.yarnpkg.com/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz#3d8a5c66883a16a30ca8643e851f19baa7797917"
   integrity sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=
 
-fault@^1.0.2:
+fault@^1.0.0:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/fault/-/fault-1.0.4.tgz#eafcfc0a6d214fc94601e170df29954a4f842f13"
   integrity sha512-CJ0HCB5tL5fYTEA7ToAq5+kTwd++Borf1/bifxd9iT70QcXr4MRrO3Llf8Ifs70q+SJcGHFtnIE/Nw6giCtECA==
@@ -3917,10 +3917,10 @@ he@1.2.0:
   resolved "https://registry.yarnpkg.com/he/-/he-1.2.0.tgz#84ae65fa7eafb165fddb61566ae14baf05664f0f"
   integrity sha512-F/1DnUGPopORZi0ni+CvrCgHQ5FyEAHRLSApuYWMmrbSwoN2Mn/7k+Gl38gJnR7yyDZk6WLXwiGod1JOWNDKGw==
 
-highlight.js@~9.12.0:
-  version "9.12.0"
-  resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-9.12.0.tgz#e6d9dbe57cbefe60751f02af336195870c90c01e"
-  integrity sha1-5tnb5Xy+/mB1HwKvM2GVhwyQwB4=
+highlight.js@~10.4.0:
+  version "10.4.1"
+  resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-10.4.1.tgz#d48fbcf4a9971c4361b3f95f302747afe19dbad0"
+  integrity sha512-yR5lWvNz7c85OhVAEAeFhVCc/GV4C30Fjzc/rCP0aCWzc1UUOPUk55dK/qdwTZHBvMZo+eZ2jpk62ndX/xMFlg==
 
 homedir-polyfill@^1.0.1:
   version "1.0.3"
@@ -4929,13 +4929,13 @@ loud-rejection@^1.0.0:
     currently-unhandled "^0.4.1"
     signal-exit "^3.0.0"
 
-lowlight@~1.9.0:
-  version "1.9.2"
-  resolved "https://registry.yarnpkg.com/lowlight/-/lowlight-1.9.2.tgz#0b9127e3cec2c3021b7795dd81005c709a42fdd1"
-  integrity sha512-Ek18ElVCf/wF/jEm1b92gTnigh94CtBNWiZ2ad+vTgW7cTmQxUY3I98BjHK68gZAJEWmybGBZgx9qv3QxLQB/Q==
+lowlight@~1.17.0:
+  version "1.17.0"
+  resolved "https://registry.yarnpkg.com/lowlight/-/lowlight-1.17.0.tgz#a1143b2fba8239df8cd5893f9fe97aaf8465af4a"
+  integrity sha512-vmtBgYKD+QVNy7tIa7ulz5d//Il9R4MooOVh4nkOf9R9Cb/Dk5TXMSTieg/vDulkBkIWj59/BIlyFQxT9X1oAQ==
   dependencies:
-    fault "^1.0.2"
-    highlight.js "~9.12.0"
+    fault "^1.0.0"
+    highlight.js "~10.4.0"
 
 lru-cache@^5.1.1:
   version "5.1.1"