diff --git a/browser/components/aboutwelcome/karma.mc.config.js b/browser/components/aboutwelcome/karma.mc.config.js
index 17d8e70fd718..4587ed988363 100644
--- a/browser/components/aboutwelcome/karma.mc.config.js
+++ b/browser/components/aboutwelcome/karma.mc.config.js
@@ -75,19 +75,19 @@ module.exports = function (config) {
           statements: 80,
           lines: 80,
           functions: 80,
-          branches: 66,
+          branches: 80,
           overrides: {
-            "modules/*.sys.mjs": {
-              statements: 0,
-              lines: 0,
-              functions: 0,
-              branches: 0,
+            "modules/AboutWelcomeDefaults.sys.mjs": {
+              statements: 48.15,
+              lines: 48.75,
+              functions: 61.54,
+              branches: 37.04,
             },
             "content-src/lib/aboutwelcome-utils.mjs": {
-              statements: 50,
-              lines: 50,
-              functions: 50,
-              branches: 0,
+              statements: 73.68,
+              lines: 73.68,
+              functions: 71.43,
+              branches: 66.67,
             },
             "content-src/components/LanguageSwitcher.jsx": {
               // This file is covered by the mochitest: browser_aboutwelcome_multistage_languageSwitcher.js
@@ -124,9 +124,11 @@ module.exports = function (config) {
               statements: 77.42,
               lines: 77.42,
               functions: 75,
+              branches: 73.08,
             },
             "content-src/components/CTAParagraph.jsx": {
               functions: 50,
+              branches: 75,
             },
             "content-src/components/HeroImage.jsx": {
               branches: 62.5,
@@ -139,6 +141,7 @@ module.exports = function (config) {
               statements: 76.09,
               lines: 75,
               functions: 76.92,
+              branches: 74.07,
             },
             "content-src/components/MobileDownloads.jsx": {
               branches: 56.25,
@@ -152,6 +155,12 @@ module.exports = function (config) {
               functions: 73.17,
               branches: 61.74,
             },
+            "content-src/components/AdditionalCTA.jsx": {
+              branches: 75,
+            },
+            "content-src/components/MultiStageProtonScreen.jsx": {
+              branches: 79.07,
+            },
           },
         },
       },
diff --git a/browser/components/asrouter/karma.mc.config.js b/browser/components/asrouter/karma.mc.config.js
index 63b4cf785d3f..cfabcc4eea88 100644
--- a/browser/components/asrouter/karma.mc.config.js
+++ b/browser/components/asrouter/karma.mc.config.js
@@ -75,43 +75,30 @@ module.exports = function (config) {
           statements: 80,
           lines: 80,
           functions: 80,
-          branches: 66,
+          branches: 80,
           overrides: {
-            "content-src/asrouter-utils.js": {
-              statements: 66,
-              lines: 66,
-              functions: 76,
-              branches: 33,
-            },
-            "content-src/components/ASRouterAdmin/*.jsx": {
+            "content-src/components/ASRouterAdmin/SimpleHashRouter.jsx": {
               statements: 0,
-              lines: 0,
               functions: 0,
+              lines: 0,
+            },
+            "content-src/components/ASRouterAdmin/CopyButton.jsx": {
+              statements: 7.14,
+              lines: 7.69,
               branches: 0,
+              functions: 0,
             },
-            "content-src/components/ModalOverlay/ModalOverlay.jsx": {
-              statements: 92,
-              lines: 92,
-              functions: 100,
-              branches: 66,
+            "content-src/components/ASRouterAdmin/ImpressionsSection.jsx": {
+              statements: 7.14,
+              lines: 7.5,
+              branches: 0,
+              functions: 0,
             },
-            "modules/ASRouter.sys.mjs": {
-              statements: 75,
-              lines: 75,
-              functions: 64,
-              branches: 66,
-            },
-            "modules/ASRouterParentProcessMessageHandler.sys.mjs": {
-              statements: 98,
-              lines: 98,
-              functions: 100,
-              branches: 88,
-            },
-            "modules/ToolbarPanelHub.sys.mjs": {
-              statements: 88,
-              lines: 88,
-              functions: 94,
-              branches: 84,
+            "content-src/components/ASRouterAdmin/ASRouterAdmin.jsx": {
+              statements: 39.19,
+              lines: 39.19,
+              branches: 47.15,
+              functions: 32.08,
             },
           },
         },