diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a3f8421f..bf9158c4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
 
     strategy:
       matrix:
-        mcVersion: ['1.8.8', '1.9.4', '1.10.2', '1.11.2', '1.12.2', '1.13.2', '1.14.4', '1.15.2', '1.16.1', '1.16.4', '1.17.1', '1.18.1', '1.19', '1.20.1']
+        mcVersion: ['1.8.8', '1.9.4', '1.10.2', '1.11.2', '1.12.2', '1.13.2', '1.14.4', '1.15.2', '1.16.1', '1.16.4', '1.17.1', '1.18.1', '1.19', '1.20.1', '1.21.1']
       fail-fast: false
 
     steps:
@@ -34,7 +34,7 @@ jobs:
     - name: Setup Java JDK
       uses: actions/setup-java@v1
       with:
-        java-version: 17
+        java-version: 21
         java-package: jre
     - name: Install xi
       run: sudo apt-get install -y libxi-dev libglu1-mesa-dev
diff --git a/README.md b/README.md
index 7f52d92d..4fd4be96 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ Web based viewer for servers and bots
 
 [<img src="https://prismarinejs.github.io/prismarine-viewer/test_1.18.1.png" alt="viewer" width="300">](https://prismarinejs.github.io/prismarine-viewer/)
 
-Supports versions 1.8.8, 1.9.4, 1.10.2, 1.11.2, 1.12.2, 1.13.2, 1.14.4, 1.15.2, 1.16.1, 1.16.4, 1.17.1, 1.18.1, 1.19, 1.20.1.
+Supports versions 1.8.8, 1.9.4, 1.10.2, 1.11.2, 1.12.2, 1.13.2, 1.14.4, 1.15.2, 1.16.1, 1.16.4, 1.17.1, 1.18.1, 1.19, 1.20.1, 1.21.1.
 
 ## Install
 
diff --git a/viewer/lib/modelsBuilder.js b/viewer/lib/modelsBuilder.js
index 1a6ab5cb..a7736c6b 100644
--- a/viewer/lib/modelsBuilder.js
+++ b/viewer/lib/modelsBuilder.js
@@ -53,6 +53,11 @@ function prepareModel (model, texturesJson) {
 
       if (face.texture.charAt(0) === '#') {
         face.texture = JSON.parse(JSON.stringify(model.textures[face.texture.substr(1)]))
+      } else if (
+        !(cleanupBlockName(face.texture) in texturesJson) &&
+        face.texture in model.textures
+      ) {
+        face.texture = JSON.parse(JSON.stringify(model.textures[face.texture]))
       } else {
         let name = face.texture
         name = cleanupBlockName(name)
diff --git a/viewer/lib/version.js b/viewer/lib/version.js
index d6808954..196930e6 100644
--- a/viewer/lib/version.js
+++ b/viewer/lib/version.js
@@ -1,4 +1,4 @@
-const supportedVersions = ['1.8.8', '1.9.4', '1.10.2', '1.11.2', '1.12.2', '1.13.2', '1.14.4', '1.15.2', '1.16.1', '1.16.4', '1.17.1', '1.18.1', '1.19', '1.20.1']
+const supportedVersions = ['1.8.8', '1.9.4', '1.10.2', '1.11.2', '1.12.2', '1.13.2', '1.14.4', '1.15.2', '1.16.1', '1.16.4', '1.17.1', '1.18.1', '1.19', '1.20.1', '1.21.1']
 
 const lastOfMajor = {}
 for (const version of supportedVersions) {