diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5231bf69d..df6129eb0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,10 @@
 * Renaming symbol fails within a file that had recently been renamed without saving changes.
   * As a workaround, make an edit within the file before using Rename Symbol.
 
+## 1.25.6
+* Update Razor to 7.0.0-preview.23213.4 (PR: [#5655](https://github.com/OmniSharp/omnisharp-vscode/pull/5655))
+  * Fix serialization issue with project.razor.json files (PR: [#8489](https://github.com/dotnet/razor/pull/8489))
+
 ## 1.25.5
 * Update Razor to 7.0.0-preview.23124.2 (PR: [#5604](https://github.com/OmniSharp/omnisharp-vscode/pull/5604))
   * Fix colorization when nullable operators are present ([#5570](https://github.com/OmniSharp/omnisharp-vscode/pull/5570))
diff --git a/README.md b/README.md
index a31571649..4fe33ee39 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,10 @@ If you still need Unity or .NET Framework support, you can set `omnisharp.useMod
 
 See issue [#5120](https://github.com/OmniSharp/omnisharp-vscode/issues/5120) for more details.
 
+## What's new in 1.25.6
+* Update Razor to 7.0.0-preview.23213.4 (PR: [#5655](https://github.com/OmniSharp/omnisharp-vscode/pull/5655))
+  * Fix serialization issue with project.razor.json files (PR: [#8489](https://github.com/dotnet/razor/pull/8489))
+
 ## What's new in 1.25.5
 * Update Razor to 7.0.0-preview.23124.2 (PR: [#5604](https://github.com/OmniSharp/omnisharp-vscode/pull/5604))
   * Fix colorization when nullable operators are present ([#5570](https://github.com/OmniSharp/omnisharp-vscode/pull/5570))
diff --git a/package-lock.json b/package-lock.json
index 8f9d0ef12..caf1fd96e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,7 +18,7 @@
         "http-proxy-agent": "4.0.1",
         "https-proxy-agent": "5.0.0",
         "jsonc-parser": "3.0.0",
-        "microsoft.aspnetcore.razor.vscode": "https://download.visualstudio.microsoft.com/download/pr/b6a83fad-e9b1-4f47-8da7-b164207eeea5/ead84696b88864d35b9bb1de2740ba8d/microsoft.aspnetcore.razor.vscode-7.0.0-preview.23124.2.tgz",
+        "microsoft.aspnetcore.razor.vscode": "https://download.visualstudio.microsoft.com/download/pr/fcce87ef-b85b-49ea-a170-224a16d3adf8/05b01ae7024ca0a4d598bbfc41fec3a6/microsoft.aspnetcore.razor.vscode-7.0.0-preview.23213.4.tgz",
         "node-machine-id": "1.1.12",
         "request-light": "0.4.0",
         "rxjs": "6.6.7",
@@ -5172,9 +5172,9 @@
       }
     },
     "node_modules/microsoft.aspnetcore.razor.vscode": {
-      "version": "7.0.0-preview.23124.2",
-      "resolved": "https://download.visualstudio.microsoft.com/download/pr/b6a83fad-e9b1-4f47-8da7-b164207eeea5/ead84696b88864d35b9bb1de2740ba8d/microsoft.aspnetcore.razor.vscode-7.0.0-preview.23124.2.tgz",
-      "integrity": "sha512-68uKDWhZgN/DPtHNgZpDk6Ia510qG4LxJWnzDP3VGcG80aNn+9nF+7IoYi+yNZW95XvpVUeHxfu+XvUyOsPaRw==",
+      "version": "7.0.0-preview.23213.4",
+      "resolved": "https://download.visualstudio.microsoft.com/download/pr/fcce87ef-b85b-49ea-a170-224a16d3adf8/05b01ae7024ca0a4d598bbfc41fec3a6/microsoft.aspnetcore.razor.vscode-7.0.0-preview.23213.4.tgz",
+      "integrity": "sha512-T+yJduzojfaFxlIobLlVbgZ7UF8iHepZWpJMTOOV09hx1VZub7ycVofBmA8pehFZ8YEUlTHnE/mfgSwetuZaOA==",
       "dependencies": {
         "ps-list": "7.2.0",
         "vscode-html-languageservice": "^5.0.1",
@@ -13465,8 +13465,8 @@
       }
     },
     "microsoft.aspnetcore.razor.vscode": {
-      "version": "https://download.visualstudio.microsoft.com/download/pr/b6a83fad-e9b1-4f47-8da7-b164207eeea5/ead84696b88864d35b9bb1de2740ba8d/microsoft.aspnetcore.razor.vscode-7.0.0-preview.23124.2.tgz",
-      "integrity": "sha512-68uKDWhZgN/DPtHNgZpDk6Ia510qG4LxJWnzDP3VGcG80aNn+9nF+7IoYi+yNZW95XvpVUeHxfu+XvUyOsPaRw==",
+      "version": "https://download.visualstudio.microsoft.com/download/pr/fcce87ef-b85b-49ea-a170-224a16d3adf8/05b01ae7024ca0a4d598bbfc41fec3a6/microsoft.aspnetcore.razor.vscode-7.0.0-preview.23213.4.tgz",
+      "integrity": "sha512-T+yJduzojfaFxlIobLlVbgZ7UF8iHepZWpJMTOOV09hx1VZub7ycVofBmA8pehFZ8YEUlTHnE/mfgSwetuZaOA==",
       "requires": {
         "ps-list": "7.2.0",
         "vscode-html-languageservice": "^5.0.1",
diff --git a/package.json b/package.json
index e039f08fc..2fff9113d 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
   },
   "defaults": {
     "omniSharp": "1.39.6",
-    "razor": "7.0.0-preview.23124.2"
+    "razor": "7.0.0-preview.23213.4"
   },
   "main": "./dist/extension",
   "scripts": {
@@ -67,7 +67,7 @@
     "http-proxy-agent": "4.0.1",
     "https-proxy-agent": "5.0.0",
     "jsonc-parser": "3.0.0",
-    "microsoft.aspnetcore.razor.vscode": "https://download.visualstudio.microsoft.com/download/pr/b6a83fad-e9b1-4f47-8da7-b164207eeea5/ead84696b88864d35b9bb1de2740ba8d/microsoft.aspnetcore.razor.vscode-7.0.0-preview.23124.2.tgz",
+    "microsoft.aspnetcore.razor.vscode": "https://download.visualstudio.microsoft.com/download/pr/fcce87ef-b85b-49ea-a170-224a16d3adf8/05b01ae7024ca0a4d598bbfc41fec3a6/microsoft.aspnetcore.razor.vscode-7.0.0-preview.23213.4.tgz",
     "node-machine-id": "1.1.12",
     "request-light": "0.4.0",
     "rxjs": "6.6.7",
@@ -523,7 +523,7 @@
     {
       "id": "Razor",
       "description": "Razor Language Server (Windows / x64)",
-      "url": "https://download.visualstudio.microsoft.com/download/pr/b6a83fad-e9b1-4f47-8da7-b164207eeea5/d8b448d6053ebcb10feff92aaf8536e2/razorlanguageserver-win-x64-7.0.0-preview.23124.2.zip",
+      "url": "https://download.visualstudio.microsoft.com/download/pr/fcce87ef-b85b-49ea-a170-224a16d3adf8/a368d4444763afba5e81363e3c9b239e/razorlanguageserver-win-x64-7.0.0-preview.23213.4.zip",
       "installPath": ".razor",
       "platforms": [
         "win32"
@@ -535,7 +535,7 @@
     {
       "id": "Razor",
       "description": "Razor Language Server (Windows / x86)",
-      "url": "https://download.visualstudio.microsoft.com/download/pr/b6a83fad-e9b1-4f47-8da7-b164207eeea5/2c7b92b8020aad20421161c8265c3043/razorlanguageserver-win-x86-7.0.0-preview.23124.2.zip",
+      "url": "https://download.visualstudio.microsoft.com/download/pr/fcce87ef-b85b-49ea-a170-224a16d3adf8/9d09bf6a13e1d7916224d47ec30e3c1d/razorlanguageserver-win-x86-7.0.0-preview.23213.4.zip",
       "installPath": ".razor",
       "platforms": [
         "win32"
@@ -547,7 +547,7 @@
     {
       "id": "Razor",
       "description": "Razor Language Server (Windows / ARM64)",
-      "url": "https://download.visualstudio.microsoft.com/download/pr/b6a83fad-e9b1-4f47-8da7-b164207eeea5/71015c6668052ff7d0ecae6a67f1a817/razorlanguageserver-win-arm64-7.0.0-preview.23124.2.zip",
+      "url": "https://download.visualstudio.microsoft.com/download/pr/fcce87ef-b85b-49ea-a170-224a16d3adf8/7401a409ea05f47df3121ad3c2d9f3a5/razorlanguageserver-win-arm64-7.0.0-preview.23213.4.zip",
       "installPath": ".razor",
       "platforms": [
         "win32"
@@ -559,7 +559,7 @@
     {
       "id": "Razor",
       "description": "Razor Language Server (Linux / x64)",
-      "url": "https://download.visualstudio.microsoft.com/download/pr/b6a83fad-e9b1-4f47-8da7-b164207eeea5/aac784a0d2d27ed67b68c49e0869d9b3/razorlanguageserver-linux-x64-7.0.0-preview.23124.2.zip",
+      "url": "https://download.visualstudio.microsoft.com/download/pr/fcce87ef-b85b-49ea-a170-224a16d3adf8/b687229a6d2fda8f755adeb97face1d0/razorlanguageserver-linux-x64-7.0.0-preview.23213.4.zip",
       "installPath": ".razor",
       "platforms": [
         "linux"
@@ -574,7 +574,7 @@
     {
       "id": "Razor",
       "description": "Razor Language Server (Linux ARM64)",
-      "url": "https://download.visualstudio.microsoft.com/download/pr/b6a83fad-e9b1-4f47-8da7-b164207eeea5/8686aa51ac5a5bc3484703e2398f3924/razorlanguageserver-linux-arm64-7.0.0-preview.23124.2.zip",
+      "url": "https://download.visualstudio.microsoft.com/download/pr/fcce87ef-b85b-49ea-a170-224a16d3adf8/964e07fb63623f18a26b441d15789f9a/razorlanguageserver-linux-arm64-7.0.0-preview.23213.4.zip",
       "installPath": ".razor",
       "platforms": [
         "linux"
@@ -589,7 +589,7 @@
     {
       "id": "Razor",
       "description": "Razor Language Server (Linux musl / x64)",
-      "url": "https://download.visualstudio.microsoft.com/download/pr/b6a83fad-e9b1-4f47-8da7-b164207eeea5/168ba4d259756be73dc2cb98f214294b/razorlanguageserver-linux-musl-x64-7.0.0-preview.23124.2.zip",
+      "url": "https://download.visualstudio.microsoft.com/download/pr/fcce87ef-b85b-49ea-a170-224a16d3adf8/63ff71fe6d5c9026686a1016021bb8e2/razorlanguageserver-linux-musl-x64-7.0.0-preview.23213.4.zip",
       "installPath": ".razor",
       "platforms": [
         "linux-musl"
@@ -604,7 +604,7 @@
     {
       "id": "Razor",
       "description": "Razor Language Server (Linux musl ARM64)",
-      "url": "https://download.visualstudio.microsoft.com/download/pr/b6a83fad-e9b1-4f47-8da7-b164207eeea5/66e26679e348f33d2270571c412dc067/razorlanguageserver-linux-musl-arm64-7.0.0-preview.23124.2.zip",
+      "url": "https://download.visualstudio.microsoft.com/download/pr/fcce87ef-b85b-49ea-a170-224a16d3adf8/288523db8ea791b51d181b2cbd7a1ab4/razorlanguageserver-linux-musl-arm64-7.0.0-preview.23213.4.zip",
       "installPath": ".razor",
       "platforms": [
         "linux-musl"
@@ -619,7 +619,7 @@
     {
       "id": "Razor",
       "description": "Razor Language Server (macOS / x64)",
-      "url": "https://download.visualstudio.microsoft.com/download/pr/b6a83fad-e9b1-4f47-8da7-b164207eeea5/f9cf727daa893515034ebca054da9647/razorlanguageserver-osx-x64-7.0.0-preview.23124.2.zip",
+      "url": "https://download.visualstudio.microsoft.com/download/pr/fcce87ef-b85b-49ea-a170-224a16d3adf8/7ca3240031d763799b1094b34084c2d7/razorlanguageserver-osx-x64-7.0.0-preview.23213.4.zip",
       "installPath": ".razor",
       "platforms": [
         "darwin"
@@ -634,7 +634,7 @@
     {
       "id": "Razor",
       "description": "Razor Language Server (macOS ARM64)",
-      "url": "https://download.visualstudio.microsoft.com/download/pr/b6a83fad-e9b1-4f47-8da7-b164207eeea5/e8aa0c429449b61e35a0f5d268c6d208/razorlanguageserver-osx-arm64-7.0.0-preview.23124.2.zip",
+      "url": "https://download.visualstudio.microsoft.com/download/pr/fcce87ef-b85b-49ea-a170-224a16d3adf8/e2676fe2842da8ad36b8b8a1401b27cd/razorlanguageserver-osx-arm64-7.0.0-preview.23213.4.zip",
       "installPath": ".razor",
       "platforms": [
         "darwin"