diff --git a/dist/index.js b/dist/index.js
index 2d6de26..7171406 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -42,7 +42,7 @@ class CocoapodsInstaller {
             return;
         }
         // Remove pre-installed version of Cocoapods
-        exec.exec("gem", ["uninstall", "cocoapods", "--all", "--executables", "--ignore-dependencies"]);
+        await exec.exec("gem", ["uninstall", "cocoapods", "--all", "--executables", "--ignore-dependencies"]);
         // Install new version of Cocoapods
         const versionArguments = (versionSpec === "latest") ? [] : ["-v", versionSpec];
         await exec.exec("gem", ["install", "cocoapods", ...versionArguments, "--no-document"]);
diff --git a/src/installer.ts b/src/installer.ts
index 3912579..fae9db4 100644
--- a/src/installer.ts
+++ b/src/installer.ts
@@ -12,7 +12,7 @@ export class CocoapodsInstaller {
         }
 
         // Remove pre-installed version of Cocoapods
-        exec.exec("gem", ["uninstall", "cocoapods", "--all", "--executables", "--ignore-dependencies"]);
+        await exec.exec("gem", ["uninstall", "cocoapods", "--all", "--executables", "--ignore-dependencies"]);
 
         // Install new version of Cocoapods
         const versionArguments = (versionSpec === "latest") ? [] : ["-v", versionSpec];