diff --git a/.github/workflows/deployment.yml b/.github/workflows/deployment.yml
index 2d622f5..a349ff5 100644
--- a/.github/workflows/deployment.yml
+++ b/.github/workflows/deployment.yml
@@ -9,16 +9,19 @@ jobs:
   deploy_docs:
     runs-on: ubuntu-latest
     container:
-      image: crystallang/crystal
+      image: crystallang/crystal:latest-alpine
     steps:
+      - name: Install Build Dependencies
+        run: apk add --update rsync
       - uses: actions/checkout@v2
       - name: Install Dependencies
         run: shards install --production
       - name: Build
         run: crystal docs lib/athena-config/src/athena-config.cr src/athena-serializer.cr
       - name: Deploy
-        uses: JamesIves/github-pages-deploy-action@2.0.3
-        env:
+        uses: JamesIves/github-pages-deploy-action@3.6.1
+        with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           BRANCH: gh-pages
           FOLDER: docs
+          SINGLE_COMMIT: true
diff --git a/shard.yml b/shard.yml
index c1362cd..656c5b4 100644
--- a/shard.yml
+++ b/shard.yml
@@ -1,6 +1,6 @@
 name: athena-serializer
 
-version: 0.2.0
+version: 0.2.1
 
 crystal: 0.35.0
 
diff --git a/src/any.cr b/src/any.cr
index e1ed38d..72f7dd8 100644
--- a/src/any.cr
+++ b/src/any.cr
@@ -14,7 +14,7 @@ module Athena::Serializer::Any
   abstract def as_a
   abstract def as_a?
   abstract def is_nil? : Bool
-  abstract def dig(key, *keys)
+  abstract def dig(key_or_index : String | Int, *keys)
 
   abstract def raw
 end
diff --git a/src/navigators/deserialization_navigator.cr b/src/navigators/deserialization_navigator.cr
index ec30cd2..b4a5be2 100644
--- a/src/navigators/deserialization_navigator.cr
+++ b/src/navigators/deserialization_navigator.cr
@@ -1,5 +1,5 @@
 module Athena::Serializer::Navigators::DeserializationNavigatorInterface
-  abstract def accept(type, data : ASR::Any)
+  abstract def accept(type : T.class, data : ASR::Any) forall T
 end
 
 struct Athena::Serializer::Navigators::DeserializationNavigator