diff --git a/dist/save-cache/index.js b/dist/save-cache/index.js
index aba2bdd..7e7b7b7 100644
--- a/dist/save-cache/index.js
+++ b/dist/save-cache/index.js
@@ -91490,11 +91490,9 @@ function computeKeys(version) {
             core.info(`Searching files using cache dependency glob: ${inputs_1.cacheDependencyGlob.split("\n").join(",")}`);
             cacheDependencyPathHash += yield (0, hash_files_1.hashFiles)(inputs_1.cacheDependencyGlob, true);
             if (cacheDependencyPathHash === "-") {
-                throw new Error(`No file matched to [${inputs_1.cacheDependencyGlob.split("\n").join(",")}], make sure you have checked out the target repository and configured the cache-dependency-glob input correctly.`);
+                core.warning(`No file matched to [${inputs_1.cacheDependencyGlob.split("\n").join(",")}]. The cache will never get invalidated. Make sure you have checked out the target repository and configured the cache-dependency-glob input correctly.`);
             }
-        }
-        else {
-            cacheDependencyPathHash += "no-dependency-glob";
+            cacheDependencyPathHash = "-no-dependency-glob";
         }
         const suffix = inputs_1.cacheSuffix ? `-${inputs_1.cacheSuffix}` : "";
         const pythonVersion = yield getPythonVersion();
diff --git a/dist/setup/index.js b/dist/setup/index.js
index 9d8c0e9..e9f1bff 100644
--- a/dist/setup/index.js
+++ b/dist/setup/index.js
@@ -96573,11 +96573,9 @@ function computeKeys(version) {
             core.info(`Searching files using cache dependency glob: ${inputs_1.cacheDependencyGlob.split("\n").join(",")}`);
             cacheDependencyPathHash += yield (0, hash_files_1.hashFiles)(inputs_1.cacheDependencyGlob, true);
             if (cacheDependencyPathHash === "-") {
-                throw new Error(`No file matched to [${inputs_1.cacheDependencyGlob.split("\n").join(",")}], make sure you have checked out the target repository and configured the cache-dependency-glob input correctly.`);
+                core.warning(`No file matched to [${inputs_1.cacheDependencyGlob.split("\n").join(",")}]. The cache will never get invalidated. Make sure you have checked out the target repository and configured the cache-dependency-glob input correctly.`);
             }
-        }
-        else {
-            cacheDependencyPathHash += "no-dependency-glob";
+            cacheDependencyPathHash = "-no-dependency-glob";
         }
         const suffix = inputs_1.cacheSuffix ? `-${inputs_1.cacheSuffix}` : "";
         const pythonVersion = yield getPythonVersion();
diff --git a/src/cache/restore-cache.ts b/src/cache/restore-cache.ts
index 90631b9..82572a0 100644
--- a/src/cache/restore-cache.ts
+++ b/src/cache/restore-cache.ts
@@ -43,12 +43,11 @@ async function computeKeys(version: string): Promise<string> {
     );
     cacheDependencyPathHash += await hashFiles(cacheDependencyGlob, true);
     if (cacheDependencyPathHash === "-") {
-      throw new Error(
-        `No file matched to [${cacheDependencyGlob.split("\n").join(",")}], make sure you have checked out the target repository and configured the cache-dependency-glob input correctly.`,
+      core.warning(
+        `No file matched to [${cacheDependencyGlob.split("\n").join(",")}]. The cache will never get invalidated. Make sure you have checked out the target repository and configured the cache-dependency-glob input correctly.`,
       );
     }
-  } else {
-    cacheDependencyPathHash += "no-dependency-glob";
+    cacheDependencyPathHash = "-no-dependency-glob";
   }
   const suffix = cacheSuffix ? `-${cacheSuffix}` : "";
   const pythonVersion = await getPythonVersion();