diff --git a/lib/main.js b/lib/main.js
index 7f1219a3..7a7a943d 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -123,8 +123,10 @@ function run() {
                     process.chdir(workingDirectory);
                 }
                 for (const script of scripts) {
-                    yield exec.exec(`sh -c \\"${script}"`);
-                }
+                    // use array form to avoid various quote escaping problems
+                    // caused by exec(`sh -c "${script}"`)
+                    yield exec.exec('sh', ['-c', script]);
+               }
             }
             catch (error) {
                 core.setFailed(error.message);
diff --git a/src/main.ts b/src/main.ts
index c671dd6c..de27fecf 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -111,7 +111,9 @@ async function run() {
         process.chdir(workingDirectory);
       }
       for (const script of scripts) {
-        await exec.exec(`sh -c \\"${script}"`);
+        // use array form to avoid various quote escaping problems
+        // caused by exec(`sh -c "${script}"`)
+        await exec.exec('sh', ['-c', script]);
       }
     } catch (error) {
       core.setFailed(error.message);