diff --git a/app/assets/javascripts/admin/package.json b/app/assets/javascripts/admin/package.json
index 904603cb0d5..c889954ef09 100644
--- a/app/assets/javascripts/admin/package.json
+++ b/app/assets/javascripts/admin/package.json
@@ -18,7 +18,7 @@
     "ember-auto-import": "^2.6.2",
     "ember-cli-babel": "^7.26.10",
     "ember-cli-htmlbars": "^6.2.0",
-    "webpack": "^5.77.0",
+    "webpack": "^5.78.0",
     "xss": "^1.0.14"
   },
   "devDependencies": {
diff --git a/app/assets/javascripts/dialog-holder/package.json b/app/assets/javascripts/dialog-holder/package.json
index e2914108a0c..3bd2ec1d264 100644
--- a/app/assets/javascripts/dialog-holder/package.json
+++ b/app/assets/javascripts/dialog-holder/package.json
@@ -14,7 +14,7 @@
     "ember-cli-htmlbars": "^6.2.0"
   },
   "devDependencies": {
-    "webpack": "^5.77.0"
+    "webpack": "^5.78.0"
   },
   "engines": {
     "node": "16.* || >= 18",
diff --git a/app/assets/javascripts/discourse-common/package.json b/app/assets/javascripts/discourse-common/package.json
index 9997ba2cf86..36f96ad78dd 100644
--- a/app/assets/javascripts/discourse-common/package.json
+++ b/app/assets/javascripts/discourse-common/package.json
@@ -27,7 +27,7 @@
     "ember-resolver": "^8.0.3",
     "handlebars": "^4.7.0",
     "truth-helpers": "1.0.0",
-    "webpack": "^5.77.0"
+    "webpack": "^5.78.0"
   },
   "devDependencies": {
     "@babel/core": "^7.21.4",
diff --git a/app/assets/javascripts/discourse-hbr/package.json b/app/assets/javascripts/discourse-hbr/package.json
index 4073aeeedd2..02405abe5ef 100644
--- a/app/assets/javascripts/discourse-hbr/package.json
+++ b/app/assets/javascripts/discourse-hbr/package.json
@@ -19,7 +19,7 @@
     "ember-cli-babel": "^7.26.10",
     "ember-cli-htmlbars": "^6.2.0",
     "handlebars": "^4.7.6",
-    "webpack": "^5.77.0"
+    "webpack": "^5.78.0"
   },
   "devDependencies": {
     "@babel/core": "^7.21.4",
diff --git a/app/assets/javascripts/discourse-plugins/package.json b/app/assets/javascripts/discourse-plugins/package.json
index 394b09af6de..bb2cfd222a3 100644
--- a/app/assets/javascripts/discourse-plugins/package.json
+++ b/app/assets/javascripts/discourse-plugins/package.json
@@ -14,7 +14,7 @@
     "ember-cli": "~3.28.5",
     "ember-cli-babel": "^7.26.10",
     "ember-cli-htmlbars": "^6.2.0",
-    "webpack": "^5.77.0"
+    "webpack": "^5.78.0"
   },
   "devDependencies": {
     "@babel/core": "^7.21.4"
diff --git a/app/assets/javascripts/discourse-widget-hbs/package.json b/app/assets/javascripts/discourse-widget-hbs/package.json
index 2f81f113486..bceb86cf6dc 100644
--- a/app/assets/javascripts/discourse-widget-hbs/package.json
+++ b/app/assets/javascripts/discourse-widget-hbs/package.json
@@ -19,7 +19,7 @@
     "ember-cli-babel": "^7.26.10",
     "ember-cli-htmlbars": "^6.2.0",
     "handlebars": "^4.7.6",
-    "webpack": "^5.77.0"
+    "webpack": "^5.78.0"
   },
   "devDependencies": {
     "@babel/core": "^7.21.4",
diff --git a/app/assets/javascripts/discourse/package.json b/app/assets/javascripts/discourse/package.json
index d711426323f..d7952399d40 100644
--- a/app/assets/javascripts/discourse/package.json
+++ b/app/assets/javascripts/discourse/package.json
@@ -97,7 +97,7 @@
     "terser": "^5.16.8",
     "tippy.js": "^6.3.7",
     "util": "^0.12.5",
-    "webpack": "^5.77.0",
+    "webpack": "^5.78.0",
     "wizard": "1.0.0",
     "xss": "^1.0.14"
   },
diff --git a/app/assets/javascripts/pretty-text/package.json b/app/assets/javascripts/pretty-text/package.json
index 917d9f0ae27..17602f275b3 100644
--- a/app/assets/javascripts/pretty-text/package.json
+++ b/app/assets/javascripts/pretty-text/package.json
@@ -18,7 +18,7 @@
     "ember-auto-import": "^2.6.2",
     "ember-cli-babel": "^7.26.10",
     "ember-cli-htmlbars": "^6.2.0",
-    "webpack": "^5.77.0",
+    "webpack": "^5.78.0",
     "xss": "^1.0.14"
   },
   "devDependencies": {
diff --git a/app/assets/javascripts/select-kit/package.json b/app/assets/javascripts/select-kit/package.json
index 5e4dd7997d5..9a34440dbc6 100644
--- a/app/assets/javascripts/select-kit/package.json
+++ b/app/assets/javascripts/select-kit/package.json
@@ -18,7 +18,7 @@
     "ember-auto-import": "^2.6.2",
     "ember-cli-babel": "^7.26.10",
     "ember-cli-htmlbars": "^6.2.0",
-    "webpack": "^5.77.0"
+    "webpack": "^5.78.0"
   },
   "devDependencies": {
     "@babel/core": "^7.21.4",
diff --git a/app/assets/javascripts/truth-helpers/package.json b/app/assets/javascripts/truth-helpers/package.json
index cfaf182e3f6..bc45aadc5e0 100644
--- a/app/assets/javascripts/truth-helpers/package.json
+++ b/app/assets/javascripts/truth-helpers/package.json
@@ -18,7 +18,7 @@
     "ember-auto-import": "^2.6.2",
     "ember-cli-babel": "^7.26.10",
     "ember-cli-htmlbars": "^6.2.0",
-    "webpack": "^5.77.0"
+    "webpack": "^5.78.0"
   },
   "devDependencies": {
     "@babel/core": "^7.21.4",
diff --git a/app/assets/javascripts/wizard/package.json b/app/assets/javascripts/wizard/package.json
index 1f9968fe3e0..6d0a56c8c83 100644
--- a/app/assets/javascripts/wizard/package.json
+++ b/app/assets/javascripts/wizard/package.json
@@ -18,7 +18,7 @@
     "ember-auto-import": "^2.6.2",
     "ember-cli-babel": "^7.26.10",
     "ember-cli-htmlbars": "^6.2.0",
-    "webpack": "^5.77.0",
+    "webpack": "^5.78.0",
     "xss": "^1.0.14"
   },
   "devDependencies": {
diff --git a/app/assets/javascripts/yarn.lock b/app/assets/javascripts/yarn.lock
index b719cc7545f..71c1efe60e5 100644
--- a/app/assets/javascripts/yarn.lock
+++ b/app/assets/javascripts/yarn.lock
@@ -9515,10 +9515,10 @@ webpack-sources@^3.2.3:
   resolved "https://registry.yarnpkg.com/webpack-sources/-/webpack-sources-3.2.3.tgz#2d4daab8451fd4b240cc27055ff6a0c2ccea0cde"
   integrity sha512-/DyMEOrDgLKKIG0fmvtz+4dUX/3Ghozwgm6iPp8KRhvn+eQf9+Q7GWxVNMk3+uCPWfdXYC4ExGBckIXdFEfH1w==
 
-webpack@^5.77.0:
-  version "5.77.0"
-  resolved "https://registry.yarnpkg.com/webpack/-/webpack-5.77.0.tgz#dea3ad16d7ea6b84aa55fa42f4eac9f30e7eb9b4"
-  integrity sha512-sbGNjBr5Ya5ss91yzjeJTLKyfiwo5C628AFjEa6WSXcZa4E+F57om3Cc8xLb1Jh0b243AWuSYRf3dn7HVeFQ9Q==
+webpack@^5.78.0:
+  version "5.78.0"
+  resolved "https://registry.yarnpkg.com/webpack/-/webpack-5.78.0.tgz#836452a12416af2a7beae906b31644cb2562f9e6"
+  integrity sha512-gT5DP72KInmE/3azEaQrISjTvLYlSM0j1Ezhht/KLVkrqtv10JoP/RXhwmX/frrutOPuSq3o5Vq0ehR/4Vmd1g==
   dependencies:
     "@types/eslint-scope" "^3.7.3"
     "@types/estree" "^0.0.51"