diff --git a/package.json b/package.json
index 016602660d75f..1569d999f81b3 100644
--- a/package.json
+++ b/package.json
@@ -1816,7 +1816,7 @@
     "oboe": "^2.1.7",
     "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/shared/vis_types/timeseries/server/lib/vis_data/response_processors/series/math.test.js b/src/platform/plugins/shared/vis_types/timeseries/server/lib/vis_data/response_processors/series/math.test.js
index a74665d54d7eb..efb7240d82d69 100644
--- a/src/platform/plugins/shared/vis_types/timeseries/server/lib/vis_data/response_processors/series/math.test.js
+++ b/src/platform/plugins/shared/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."`
       );
     }
   });
diff --git a/x-pack/platform/plugins/shared/lens/public/editor_frame_service/editor_frame/workspace_panel/__snapshots__/workspace_panel.test.tsx.snap b/x-pack/platform/plugins/shared/lens/public/editor_frame_service/editor_frame/workspace_panel/__snapshots__/workspace_panel.test.tsx.snap
index 6c938d237608f..7cd63b7383b2e 100644
--- a/x-pack/platform/plugins/shared/lens/public/editor_frame_service/editor_frame/workspace_panel/__snapshots__/workspace_panel.test.tsx.snap
+++ b/x-pack/platform/plugins/shared/lens/public/editor_frame_service/editor_frame/workspace_panel/__snapshots__/workspace_panel.test.tsx.snap
@@ -20,7 +20,7 @@ Array [
           />
         </p>
         <p>
-          Error: Unable to parse expression: Expected "/*", "//", [ ,\\t,\\r,\\n], or function but "|" found.
+          Error: Unable to parse expression: Expected "/*", "//", [ \\t\\r\\n], or function but "|" found.
         </p>
       </React.Fragment>,
       "severity": "error",
diff --git a/yarn.lock b/yarn.lock
index 46b74488b200f..9a8e5cfbf9e16 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9219,6 +9219,13 @@
     node-addon-api "^3.2.1"
     node-gyp-build "^4.3.0"
 
+"@peggyjs/from-mem@1.3.5":
+  version "1.3.5"
+  resolved "https://registry.yarnpkg.com/@peggyjs/from-mem/-/from-mem-1.3.5.tgz#d6294c588517728f73cc6c091706e147f8824be0"
+  integrity sha512-oRyzXE7nirAn+5yYjCdWQHg3EG2XXcYRoYNOK8Quqnmm+9FyK/2YWVunwudlYl++M3xY+gIAdf0vAYS+p0nKfQ==
+  dependencies:
+    semver "7.6.3"
+
 "@pkgjs/parseargs@^0.11.0":
   version "0.11.0"
   resolved "https://registry.yarnpkg.com/@pkgjs/parseargs/-/parseargs-0.11.0.tgz#a77ea742fab25775145434eb1d2328cf5013ac33"
@@ -26957,10 +26964,14 @@ pdfmake@^0.2.15:
     iconv-lite "^0.6.3"
     xmldoc "^1.3.0"
 
-peggy@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/peggy/-/peggy-1.2.0.tgz#657ba45900cbef1dc9f52356704bdbb193c2021c"
-  integrity sha512-PQ+NKpAobImfMprYQtc4Egmyi29bidRGEX0kKjCU5uuW09s0Cthwqhfy7mLkwcB4VcgacE5L/ZjruD/kOPCUUw==
+peggy@^4.2.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/peggy/-/peggy-4.2.0.tgz#9ce13fef2710357e881b57c41d426dbe90e9a001"
+  integrity sha512-ZjzyJYY8NqW8JOZr2PbS/J0UH/hnfGALxSDsBUVQg5Y/I+ZaPuGeBJ7EclUX2RvWjhlsi4pnuL1C/K/3u+cDeg==
+  dependencies:
+    "@peggyjs/from-mem" "1.3.5"
+    commander "^12.1.0"
+    source-map-generator "0.8.0"
 
 pend@~1.2.0:
   version "1.2.0"
@@ -30080,6 +30091,11 @@ semver@7.5.4:
   dependencies:
     lru-cache "^6.0.0"
 
+semver@7.6.3:
+  version "7.6.3"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-7.6.3.tgz#980f7b5550bc175fb4dc09403085627f9eb33143"
+  integrity sha512-oVekP1cKtI+CTDvHWYFUcMtsK/00wmAEfyqKfNdARm8u1wNVhSgaX7A8d4UuIlUI5e84iEwOhs7ZPYRmzU9U6A==
+
 semver@^6.0.0, semver@^6.1.0, semver@^6.1.2, semver@^6.3.0, semver@^6.3.1:
   version "6.3.1"
   resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.1.tgz#556d2ef8689146e46dcea4bfdd095f3434dffcb4"
@@ -30661,6 +30677,11 @@ source-list-map@^2.0.0:
   resolved "https://registry.yarnpkg.com/source-list-map/-/source-list-map-2.0.1.tgz#3993bd873bfc48479cca9ea3a547835c7c154b34"
   integrity sha512-qnQ7gVMxGNxsiL4lEuJwe/To8UnK7fAnmbGEEH8RpLouuKbeEm0lhbQVFIrNSuB+G7tVrAlVsZgETT5nljf+Iw==
 
+source-map-generator@0.8.0:
+  version "0.8.0"
+  resolved "https://registry.yarnpkg.com/source-map-generator/-/source-map-generator-0.8.0.tgz#10d5ca0651e2c9302ea338739cbd4408849c5d00"
+  integrity sha512-psgxdGMwl5MZM9S3FWee4EgsEaIjahYV5AzGnwUvPhWeITz/j6rKpysQHlQ4USdxvINlb8lKfWGIXwfkrgtqkA==
+
 source-map-js@^1.0.2, source-map-js@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.2.1.tgz#1ce5650fddd87abc099eda37dcff024c2667ae46"