diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7a03de9..4c4e413 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -126,3 +126,45 @@ jobs:
         run: |
           [[ -d "test/hello_world/target/aarch64-unknown-linux-gnu/debug" ]] || (echo "debug is missing" && exit 1);
           [[ -d "test/hello_world/target/aarch64-unknown-linux-gnu/release" ]] || (echo "release is missing" && exit 1);
+
+  test-git-cross:
+    name: "Test using git versions of cross"
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Set up Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: stable
+          target: aarch64-unknown-linux-gnu
+
+      - name: Enable Rust cache
+        uses: Swatinem/rust-cache@6fd3edff6979b79f87531400ad694fb7f2c84b1f # 2.2.1
+        with:
+          cache-on-failure: true
+          workspaces: "./test/hello_world -> target"
+
+      - name: Test main branch
+        uses: ./
+        with:
+          command: build
+          args: --target aarch64-unknown-linux-gnu
+          use-cross: true
+          cross-version: main
+          directory: test/hello_world
+
+      - name: Uninstall cargo cross
+        shell: bash
+        run: |
+          cargo uninstall cross || true
+
+      - name: Test git hash
+        uses: ./
+        with:
+          command: build
+          args: --target aarch64-unknown-linux-gnu
+          use-cross: true
+          cross-version: "git:d6511b7b166c18640f81b8f6a74d9eef380f7ded"
+          directory: test/hello_world
diff --git a/README.md b/README.md
index b0b3c4c..e61a21f 100644
--- a/README.md
+++ b/README.md
@@ -13,14 +13,14 @@ Note - this action does not install Rust for you, you will want to install a too
 
 **Note: Inputs aren't necessarily checked to be valid by this action!**
 
-| Name            | Description                                                                                                                 |
-| --------------- | --------------------------------------------------------------------------------------------------------------------------- |
-| `command`       | The `cargo` command to run (e.g. `build`, `test`). Required.                                                                |
-| `toolchain`     | The toolchain to use. Do not include the `+` sign (e.g. `nightly`, `beta`). Defaults to stable.                             |
-| `args`          | What arguments to pass to the cargo/cross command.                                                                          |
-| `use-cross`     | Whether to use cross instead of using cargo. If enabled, cross will automatically be installed if needed.                   |
-| `cross-version` | The cross version to use. Only used if `use-cross` is enabled. If not set, defaults to the newest stable version of cross.  |
-| `directory`     | Change to the specified directory prior to execution. Useful if your repo's base folder does not contain your Rust project. |
+| Name            | Description                                                                                                                                                                           |
+| --------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `command`       | The `cargo` command to run (e.g. `build`, `test`). Required.                                                                                                                          |
+| `toolchain`     | The toolchain to use. Do not include the `+` sign (e.g. `nightly`, `beta`). Defaults to stable.                                                                                       |
+| `args`          | What arguments to pass to the cargo/cross command.                                                                                                                                    |
+| `use-cross`     | Whether to use cross instead of using cargo. If enabled, cross will automatically be installed if needed.                                                                             |
+| `cross-version` | The cross version to use. Only used if `use-cross` is enabled. If this is not set, it will default to the newest stable version of cross. `main` or `git:XYZ` are also valid options. |
+| `directory`     | Change to the specified directory prior to execution. Useful if your repo's base folder does not contain your Rust project.                                                           |
 
 ## Example
 
diff --git a/action.yml b/action.yml
index 77b8a7c..2a8256d 100644
--- a/action.yml
+++ b/action.yml
@@ -27,8 +27,11 @@ inputs:
 
   cross-version:
     description: >
-      The cross version to use. Only used if `use-cross` is enabled. If not set, defaults to the newest stable
-      version of cross.
+      The cross version to use. This is only used if `use-cross` is enabled. If it is not set, defaults to the newest
+      stable version of cross.
+
+      You can also set the special versions of "main" or "git:xyz" to specify a specific git hash or the current main
+      branch head of cross.
     required: false
     default: ""
 
@@ -63,9 +66,17 @@ runs:
       run: |
         # Install cross
         if [[ -n "${{inputs.cross-version}}" ]]; then
-          CROSS_VERSION_ARG="--version=${{inputs.cross-version}}";
+          if [[ "${{inputs.cross-version}}" == "main" ]]; then
+            cargo install cross --git https://github.com/cross-rs/cross --branch main
+          elif [[ "${{inputs.cross-version}}" == "git:"* ]]; then
+            CROSS_VERSION_ARG="${{inputs.cross-version}}"
+            CROSS_HASH="${CROSS_VERSION_ARG:4}"
+            cargo install cross --git https://github.com/cross-rs/cross --rev ${CROSS_HASH}
+          else
+            CROSS_VERSION_ARG="--version=${{inputs.cross-version}}";
+            cargo install cross --locked ${CROSS_VERSION_ARG};
+          fi
         fi
-        cargo install cross --locked ${CROSS_VERSION_ARG};
 
     - name: Execute the cargo/cross command.
       shell: bash