diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8f3020a..db77662 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -87,3 +87,20 @@ jobs:
       - run: cargo add serde_as
 
       - run: cargo clippy
+
+  cache:
+    name: Cache
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - id: toolchain
+        name: Install Rust
+        uses: ./
+        with:
+          components: clippy
+          cache: true
+          cache-workspaces: |-
+            ./test-workspace
+
+      - run: cargo clippy --manifest-path=./test-workspace/Cargo.toml
diff --git a/README.md b/README.md
index 03677a4..c87afef 100644
--- a/README.md
+++ b/README.md
@@ -48,14 +48,15 @@ If no `toolchain` value or toolchain file is present, it will default to `stable
 First, all items specified in the toolchain file are installed.
 Afterward, the `components` and `target` specified via inputs are installed in addition to the items from the toolchain file.
 
-| Name         | Description                                                                            | Default       |
-| ------------ | -------------------------------------------------------------------------------------- | ------------- |
-| `toolchain`  | Rustup toolchain specifier e.g. `stable`, `nightly`, `1.42.0`.                         | stable        |
-| `target`     | Additional target support to install e.g. `wasm32-unknown-unknown`                     |               |
-| `components` | Comma-separated string of additional components to install e.g. `clippy, rustfmt`      |               |
-| `cache`      | Automatically configure Rust cache (using `Swatinem/rust-cache`)                       | true          |
-| `matcher`    | Enable problem matcher to surface build messages and formatting issues                 | true          |
-| `rustflags`  | Set the value of `RUSTFLAGS` (set to empty string to avoid overwriting existing flags) | "-D warnings" |
+| Name               | Description                                                                            | Default       |
+|--------------------|----------------------------------------------------------------------------------------|---------------|
+| `toolchain`        | Rustup toolchain specifier e.g. `stable`, `nightly`, `1.42.0`.                         | stable        |
+| `target`           | Additional target support to install e.g. `wasm32-unknown-unknown`                     |               |
+| `components`       | Comma-separated string of additional components to install e.g. `clippy, rustfmt`      |               |
+| `cache`            | Automatically configure Rust cache (using `Swatinem/rust-cache`)                       | true          |
+| `cache-workspaces` | Propagates the value to `Swatinem/rust-cache`                                          |               |
+| `matcher`          | Enable problem matcher to surface build messages and formatting issues                 | true          |
+| `rustflags`        | Set the value of `RUSTFLAGS` (set to empty string to avoid overwriting existing flags) | "-D warnings" |
 
 ### RUSTFLAGS
 
diff --git a/action.yml b/action.yml
index 997b954..aa618b2 100644
--- a/action.yml
+++ b/action.yml
@@ -25,6 +25,9 @@ inputs:
     description: "Automatically configure Rust cache"
     required: false
     default: "true"
+  cache-workspaces:
+    description: "Paths to multiple Cargo workspaces and their target directories, separated by newlines."
+    required: false
   matcher:
     description: "Enable the Rust problem matcher"
     required: false
@@ -171,3 +174,5 @@ runs:
     - name: Setup Rust Caching
       if: inputs.cache == 'true'
       uses: Swatinem/rust-cache@v2
+      with:
+        workspaces: ${{inputs.cache-workspaces}}
diff --git a/test-workspace/Cargo.lock b/test-workspace/Cargo.lock
new file mode 100644
index 0000000..f0ff31f
--- /dev/null
+++ b/test-workspace/Cargo.lock
@@ -0,0 +1,16 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "ci"
+version = "0.1.0"
+dependencies = [
+ "serde_as",
+]
+
+[[package]]
+name = "serde_as"
+version = "0.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ee4afe4c5c3b69699c4267ae42b838e911466d7ca0005046adc93ac95bb16dd"
diff --git a/test-workspace/Cargo.toml b/test-workspace/Cargo.toml
new file mode 100644
index 0000000..431b03d
--- /dev/null
+++ b/test-workspace/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "ci"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+serde_as = "0.0.1"
diff --git a/test-workspace/src/main.rs b/test-workspace/src/main.rs
new file mode 100644
index 0000000..e7a11a9
--- /dev/null
+++ b/test-workspace/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}