diff --git a/package-lock.json b/package-lock.json
index 3506addd3e..0abc8945e6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -20669,7 +20669,6 @@
         "@msinternal/botframework-webchat-base": "0.0.0-0",
         "@msinternal/botframework-webchat-react-hooks": "^0.0.0-0",
         "@msinternal/botframework-webchat-react-valibot": "^0.0.0-0",
-        "@tsconfig/strictest": "^2.0.5",
         "@types/node": "^22.13.4",
         "cross-env": "^7.0.3",
         "type-fest": "^4.34.1",
@@ -20979,7 +20978,6 @@
       "license": "MIT",
       "devDependencies": {
         "@msinternal/botframework-webchat-tsconfig": "^0.0.0-0",
-        "@tsconfig/strictest": "^2.0.5",
         "@types/node": "^24.1.0",
         "core-js-pure": "^3.44.0",
         "cross-env": "^10.0.0",
@@ -21915,7 +21913,6 @@
         "@msinternal/botframework-webchat-base": "0.0.0-0",
         "@msinternal/botframework-webchat-styles": "0.0.0-0",
         "@msinternal/botframework-webchat-tsconfig": "^0.0.0-0",
-        "@tsconfig/strictest": "^2.0.5",
         "@types/math-random": "^1.0.2",
         "@types/node": "^24.1.0",
         "@types/react": "^16.14.65",
@@ -21996,7 +21993,6 @@
       },
       "devDependencies": {
         "@msinternal/botframework-webchat-tsconfig": "^0.0.0-0",
-        "@tsconfig/strictest": "^2.0.5",
         "@types/jest": "^30.0.0",
         "@types/react": "^16.14.65",
         "tsup": "^8.5.0",
@@ -22241,7 +22237,6 @@
       "devDependencies": {
         "@msinternal/botframework-webchat-react-valibot": "^0.0.0-0",
         "@msinternal/botframework-webchat-tsconfig": "^0.0.0-0",
-        "@tsconfig/strictest": "^2.0.5",
         "@types/react": "^16.14.65",
         "tsup": "^8.5.0",
         "typescript": "~5.8.3"
@@ -22258,7 +22253,6 @@
         "@jridgewell/sourcemap-codec": "^1.5.4",
         "@msinternal/botframework-webchat-base": "0.0.0-0",
         "@msinternal/botframework-webchat-tsconfig": "^0.0.0-0",
-        "@tsconfig/strictest": "^2.0.5",
         "@types/node": "^24.1.0",
         "cross-env": "^10.0.0",
         "esbuild": "^0.25.8",
diff --git a/packages/api-middleware/package.json b/packages/api-middleware/package.json
index e2100f51e4..83bcbd8519 100644
--- a/packages/api-middleware/package.json
+++ b/packages/api-middleware/package.json
@@ -79,7 +79,6 @@
     "@msinternal/botframework-webchat-base": "0.0.0-0",
     "@msinternal/botframework-webchat-react-hooks": "^0.0.0-0",
     "@msinternal/botframework-webchat-react-valibot": "^0.0.0-0",
-    "@tsconfig/strictest": "^2.0.5",
     "@types/node": "^22.13.4",
     "cross-env": "^7.0.3",
     "type-fest": "^4.34.1",
diff --git a/packages/base/package.json b/packages/base/package.json
index d14a11b010..eae50cbffe 100644
--- a/packages/base/package.json
+++ b/packages/base/package.json
@@ -66,7 +66,6 @@
   },
   "devDependencies": {
     "@msinternal/botframework-webchat-tsconfig": "^0.0.0-0",
-    "@tsconfig/strictest": "^2.0.5",
     "@types/node": "^24.1.0",
     "core-js-pure": "^3.44.0",
     "cross-env": "^10.0.0",
diff --git a/packages/fluent-theme/package.json b/packages/fluent-theme/package.json
index cea2eba1ce..dba42e4c4c 100644
--- a/packages/fluent-theme/package.json
+++ b/packages/fluent-theme/package.json
@@ -72,7 +72,6 @@
     "@msinternal/botframework-webchat-base": "0.0.0-0",
     "@msinternal/botframework-webchat-styles": "0.0.0-0",
     "@msinternal/botframework-webchat-tsconfig": "^0.0.0-0",
-    "@tsconfig/strictest": "^2.0.5",
     "@types/math-random": "^1.0.2",
     "@types/node": "^24.1.0",
     "@types/react": "^16.14.65",
diff --git a/packages/react-valibot/package.json b/packages/react-valibot/package.json
index b64fb010a4..fddf4aba4f 100644
--- a/packages/react-valibot/package.json
+++ b/packages/react-valibot/package.json
@@ -57,7 +57,6 @@
   },
   "devDependencies": {
     "@msinternal/botframework-webchat-tsconfig": "^0.0.0-0",
-    "@tsconfig/strictest": "^2.0.5",
     "@types/jest": "^30.0.0",
     "@types/react": "^16.14.65",
     "tsup": "^8.5.0",
diff --git a/packages/redux-store/package.json b/packages/redux-store/package.json
index d434110a78..463bebf034 100644
--- a/packages/redux-store/package.json
+++ b/packages/redux-store/package.json
@@ -60,7 +60,6 @@
   "devDependencies": {
     "@msinternal/botframework-webchat-react-valibot": "^0.0.0-0",
     "@msinternal/botframework-webchat-tsconfig": "^0.0.0-0",
-    "@tsconfig/strictest": "^2.0.5",
     "@types/react": "^16.14.65",
     "tsup": "^8.5.0",
     "typescript": "~5.8.3"
diff --git a/packages/styles/package.json b/packages/styles/package.json
index 95f74e13ae..81938f7fb1 100644
--- a/packages/styles/package.json
+++ b/packages/styles/package.json
@@ -82,7 +82,6 @@
     "@jridgewell/sourcemap-codec": "^1.5.4",
     "@msinternal/botframework-webchat-base": "0.0.0-0",
     "@msinternal/botframework-webchat-tsconfig": "^0.0.0-0",
-    "@tsconfig/strictest": "^2.0.5",
     "@types/node": "^24.1.0",
     "cross-env": "^10.0.0",
     "esbuild": "^0.25.8",