diff --git a/README.md b/README.md
index 60f0b0d..b554461 100644
--- a/README.md
+++ b/README.md
@@ -58,7 +58,8 @@ Afterward, the `components` and `target` specified via inputs are installed in a
 | `cache-workspaces`  | Propagates the value to [`Swatinem/rust-cache`]                                                                          |               |
 | `cache-on-failure`  | Propagates the value to [`Swatinem/rust-cache`]                                                                          | true          |
 | `cache-key`         | Propagates the value to [`Swatinem/rust-cache`] as `key`                                                                 |               |
-| `cache-bin`         | Propagates the value to [`Swatinem/rust-cache`]                                                                          |               |
+| `cache-bin`         | Propagates the value to [`Swatinem/rust-cache`] as `cache-bin`                                                           | true          |
+| `shared-cache-key`  | Propagates the value to [`Swatinem/rust-cache`] as `shared-key`                                                          |               |
 | `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" |
 | `override`          | Setup the last installed toolchain as the default via `rustup override`                                                  | true          |
diff --git a/action.yml b/action.yml
index 1befac2..c47e6ae 100644
--- a/action.yml
+++ b/action.yml
@@ -42,6 +42,9 @@ inputs:
     description: "Determines whether to cache ${CARGO_HOME}/bin."
     required: false
     default: "true"
+  shared-cache-key:
+    description: "A cache key that is used instead of the automatic `job`-based key, and is stable over multiple jobs."
+    required: false
   matcher:
     description: "Enable the Rust problem matcher"
     required: false
@@ -205,3 +208,4 @@ runs:
         cache-on-failure: ${{inputs.cache-on-failure}}
         cache-bin: ${{inputs.cache-bin}}
         key: ${{inputs.cache-key}}
+        shared-key: ${{inputs.shared-cache-key}}