diff --git a/dist/index.js b/dist/index.js
index 1ef7203..d897c56 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -478,8 +478,7 @@ function run() {
                 }
             }
             if (versions.length) {
-                const includePrerelease = (core.getInput('include-prerelease') || 'false').toLowerCase() ===
-                    'true';
+                const includePrerelease = core.getBooleanInput('include-prerelease');
                 let dotnetInstaller;
                 for (const version of new Set(versions)) {
                     dotnetInstaller = new installer.DotnetCoreInstaller(version, includePrerelease);
diff --git a/src/setup-dotnet.ts b/src/setup-dotnet.ts
index 64f3149..2ae0459 100644
--- a/src/setup-dotnet.ts
+++ b/src/setup-dotnet.ts
@@ -38,9 +38,9 @@ export async function run() {
     }
 
     if (versions.length) {
-      const includePrerelease: boolean =
-        (core.getInput('include-prerelease') || 'false').toLowerCase() ===
-        'true';
+      const includePrerelease: boolean = core.getBooleanInput(
+        'include-prerelease'
+      );
       let dotnetInstaller!: installer.DotnetCoreInstaller;
       for (const version of new Set<string>(versions)) {
         dotnetInstaller = new installer.DotnetCoreInstaller(