diff --git a/packages/squiggle-lang/package.json b/packages/squiggle-lang/package.json
index f9157ada..0dca9ea6 100644
--- a/packages/squiggle-lang/package.json
+++ b/packages/squiggle-lang/package.json
@@ -45,7 +45,7 @@
     "@types/jest": "^27.4.0",
     "babel-plugin-transform-es2015-modules-commonjs": "^6.26.2",
     "bisect_ppx": "^2.7.1",
-    "chalk": "^4.1.2",
+    "chalk": "^5.0.1",
     "codecov": "3.8.3",
     "fast-check": "2.25.0",
     "gentype": "^4.3.0",
diff --git a/yarn.lock b/yarn.lock
index f9feaabc..cb1e6b3a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6155,6 +6155,11 @@ chalk@^4.0.0, chalk@^4.0.2, chalk@^4.1.0, chalk@^4.1.2:
     ansi-styles "^4.1.0"
     supports-color "^7.1.0"
 
+chalk@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-5.0.1.tgz#ca57d71e82bb534a296df63bbacc4a1c22b2a4b6"
+  integrity sha512-Fo07WOYGqMfCWHOzSXOt2CxDbC6skS/jO9ynEcmpANMoPrD+W1r1K6Vx7iNm+AQmETU1Xr2t+n8nzkV9t6xh3w==
+
 char-regex@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/char-regex/-/char-regex-1.0.2.tgz#d744358226217f981ed58f479b1d6bcc29545dcf"