diff --git a/extensions/subscriptions/js/package-lock.json b/extensions/subscriptions/js/package-lock.json
index 6948a2cb5..66075df98 100644
--- a/extensions/subscriptions/js/package-lock.json
+++ b/extensions/subscriptions/js/package-lock.json
@@ -740,176 +740,178 @@
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+      "integrity": "sha512-Vmp0jIp2ln35UTXuryvjzkjGdRyf9b2lTXuSYUiPmzRcl3FDtYqAwOnTJkAngD9SWhnoJzDbTKwaOrZ+STtxNQ==",
       "requires": {
         "unique-slug": "^2.0.0"
       }
     },
     "unique-slug": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/unique-slug/-/unique-slug-2.0.0.tgz",
-      "integrity": "sha1-22Z258fMBimHj/GWCXx4hVrp9Ks=",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/unique-slug/-/unique-slug-2.0.1.tgz",
+      "integrity": "sha512-n9cU6+gITaVu7VGj1Z8feKMmfAjEAQGhwD9fE3zvpRRa0wEIx8ODYkVGfSc94M2OX00tUFV8wH3zYbm1I8mxFg==",
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         "imurmurhash": "^0.1.4"
       }
@@ -4509,22 +4502,21 @@
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     "webpack": {
-      "version": "4.12.0",
-      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.12.0.tgz",
-      "integrity": "sha512-EJj2FfhgtjrTbJbJaNulcVpDxi9vsQVvTahHN7xJvIv6W+k4r/E6Hxy4eyOrj+IAFWqYgaUtnpxmSGYP8MSZJw==",
+      "version": "4.19.1",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.19.1.tgz",
+      "integrity": "sha512-j7Q/5QqZRqIFXJvC0E59ipLV5Hf6lAnS3ezC3I4HMUybwEDikQBVad5d+IpPtmaQPQArvgUZLXIN6lWijHBn4g==",
       "requires": {
-        "@webassemblyjs/ast": "1.5.12",
-        "@webassemblyjs/helper-module-context": "1.5.12",
-        "@webassemblyjs/wasm-edit": "1.5.12",
-        "@webassemblyjs/wasm-opt": "1.5.12",
-        "@webassemblyjs/wasm-parser": "1.5.12",
+        "@webassemblyjs/ast": "1.7.6",
+        "@webassemblyjs/helper-module-context": "1.7.6",
+        "@webassemblyjs/wasm-edit": "1.7.6",
+        "@webassemblyjs/wasm-parser": "1.7.6",
         "acorn": "^5.6.2",
         "acorn-dynamic-import": "^3.0.0",
         "ajv": "^6.1.0",
         "ajv-keywords": "^3.1.0",
         "chrome-trace-event": "^1.0.0",
-        "enhanced-resolve": "^4.0.0",
-        "eslint-scope": "^3.7.1",
+        "enhanced-resolve": "^4.1.0",
+        "eslint-scope": "^4.0.0",
         "json-parse-better-errors": "^1.0.2",
         "loader-runner": "^2.3.0",
         "loader-utils": "^1.1.0",
@@ -4534,10 +4526,27 @@
         "neo-async": "^2.5.0",
         "node-libs-browser": "^2.0.0",
         "schema-utils": "^0.4.4",
-        "tapable": "^1.0.0",
+        "tapable": "^1.1.0",
         "uglifyjs-webpack-plugin": "^1.2.4",
         "watchpack": "^1.5.0",
-        "webpack-sources": "^1.0.1"
+        "webpack-sources": "^1.2.0"
+      },
+      "dependencies": {
+        "enhanced-resolve": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/enhanced-resolve/-/enhanced-resolve-4.1.0.tgz",
+          "integrity": "sha512-F/7vkyTtyc/llOIn8oWclcB25KdRaiPBpZYDgJHgh/UHtpgT2p2eldQgtQnLtUvfMKPKxbRaQM/hHkvLHt1Vng==",
+          "requires": {
+            "graceful-fs": "^4.1.2",
+            "memory-fs": "^0.4.0",
+            "tapable": "^1.0.0"
+          }
+        },
+        "tapable": {
+          "version": "1.1.0",
+          "resolved": "https://registry.npmjs.org/tapable/-/tapable-1.1.0.tgz",
+          "integrity": "sha512-IlqtmLVaZA2qab8epUXbVWRn3aB1imbDMJtjB3nu4X0NqPkcY/JH9ZtCBWKHWPxs8Svi9tyo8w2dBoi07qZbBA=="
+        }
       }
     },
     "webpack-cli": {
@@ -4559,9 +4568,9 @@
       }
     },
     "webpack-sources": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.1.0.tgz",
-      "integrity": "sha512-aqYp18kPphgoO5c/+NaUvEeACtZjMESmDChuD3NBciVpah3XpMEU9VAAtIaB1BsfJWWTSdv8Vv1m3T0aRk2dUw==",
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.3.0.tgz",
+      "integrity": "sha512-OiVgSrbGu7NEnEvQJJgdSFPl2qWKkWq5lHMhgiToIiN9w34EBnjYzSYs+VbL5KoYiLNtFFa7BZIKxRED3I32pA==",
       "requires": {
         "source-list-map": "^2.0.0",
         "source-map": "~0.6.1"
diff --git a/extensions/subscriptions/js/package.json b/extensions/subscriptions/js/package.json
index 3637a05ed..e67b87967 100644
--- a/extensions/subscriptions/js/package.json
+++ b/extensions/subscriptions/js/package.json
@@ -3,7 +3,7 @@
   "version": "0.0.0",
   "dependencies": {
     "flarum-webpack-config": "^0.1.0-beta.8",
-    "webpack": "^4.0.0",
+    "webpack": "^4.19.1",
     "webpack-cli": "^3.0.7"
   },
   "scripts": {