diff --git a/package.json b/package.json
index 284b05cd59947..15b4ef92a1238 100644
--- a/package.json
+++ b/package.json
@@ -1838,7 +1838,7 @@
     "oboe": "^2.1.4",
     "openapi-types": "^12.1.3",
     "p-reflect": "2.1.0",
-    "peggy": "^1.2.0",
+    "peggy": "^4.2.0",
     "picomatch": "^2.3.1",
     "pirates": "^4.0.1",
     "piscina": "^3.2.0",
diff --git a/src/platform/plugins/private/vis_types/timeseries/server/lib/vis_data/response_processors/series/math.test.js b/src/platform/plugins/private/vis_types/timeseries/server/lib/vis_data/response_processors/series/math.test.js
index a74665d54d7eb..47a489081abc5 100644
--- a/src/platform/plugins/private/vis_types/timeseries/server/lib/vis_data/response_processors/series/math.test.js
+++ b/src/platform/plugins/private/vis_types/timeseries/server/lib/vis_data/response_processors/series/math.test.js
@@ -253,8 +253,8 @@ describe('math(resp, panel, series)', () => {
         series
       )(await mathAgg(resp, panel, series)((results) => results))([]);
     } catch (e) {
-      expect(e.message).toEqual(
-        'Failed to parse expression. Expected "*", "+", "-", "/", "<", "=", ">", end of input, or whitespace but "(" found.'
+      expect(e.message).toMatchInlineSnapshot(
+        `"Failed to parse expression. Expected \\"*\\", \\"+\\", \\"-\\", \\"/\\", \\"<\\", \\"=\\", \\">\\", end of input, or whitespace but \\"(\\" found."`
       );
     }
   });