diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 871b51d..0e0182b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -65,6 +65,7 @@ jobs:
           crate: cargo-hack
           version: ^0.4.4
           cache-key: test
+          shared-key: some-job
 
       - name: Install cargo-sort (from git)
         uses: ./
diff --git a/README.md b/README.md
index 8aeaec2..a34fe01 100644
--- a/README.md
+++ b/README.md
@@ -60,7 +60,7 @@ unexpected dependencies updates.
 - `args`: Additional arguments to pass to `cargo install`.
 - `cache-key`: Additional string added to the cache key used to manually
   invalidate the cache.
-- `shared-key`: A cache key that is used instead of the automatic `job`-based key, 
+- `shared-key`: A cache key that is used instead of the automatic `job`-based key,
   and is stable over multiple jobs.
 
 #### Git parameters
diff --git a/dist/index.js b/dist/index.js
index 49cb557..8d1caf4 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -60504,7 +60504,7 @@ async function getCacheKey(input, version2) {
     core.setFailed("Could not determine runner OS, runner arch or job ID");
     process.exit(1);
   }
-  let hashKey = jobId + runnerOs + runnerArch + (osVersion ?? "");
+  let hashKey = (input.sharedKey || jobId) + runnerOs + runnerArch + (osVersion ?? "");
   hashKey += input.source.type;
   if (input.source.type === "registry") {
     hashKey += input.source.registry ?? "";
@@ -60594,6 +60594,7 @@ function parseInput() {
   const locked = core2.getBooleanInput("locked", { required: false });
   const args = core2.getInput("args", { required: false });
   const cacheKey = core2.getInput("cache-key", { required: false });
+  const sharedKey = core2.getInput("shared-key", { required: false });
   const parsedArgs = parseArgsStringToArgv(args);
   const parsedFeatures = features.split(/[ ,]+/).filter(Boolean);
   if (locked) {
@@ -60639,7 +60640,8 @@ function parseInput() {
     source,
     features: parsedFeatures,
     args: parsedArgs,
-    cacheKey
+    cacheKey,
+    sharedKey
   };
 }
 
diff --git a/src/install.ts b/src/install.ts
index 58cbb61..62077f9 100644
--- a/src/install.ts
+++ b/src/install.ts
@@ -90,7 +90,8 @@ async function getCacheKey(
     process.exit(1);
   }
 
-  let hashKey = (input.sharedKey || jobId) + runnerOs + runnerArch + (osVersion ?? '');
+  let hashKey =
+    (input.sharedKey || jobId) + runnerOs + runnerArch + (osVersion ?? '');
 
   hashKey += input.source.type;
   if (input.source.type === 'registry') {