diff --git a/super_native_extensions/cargokit/gradle/plugin.gradle b/super_native_extensions/cargokit/gradle/plugin.gradle
index fdf94c43..b5101c30 100644
--- a/super_native_extensions/cargokit/gradle/plugin.gradle
+++ b/super_native_extensions/cargokit/gradle/plugin.gradle
@@ -1,5 +1,7 @@
 import java.nio.file.Paths
+import javax.inject.Inject
 import org.apache.tools.ant.taskdefs.condition.Os
+import org.gradle.process.ExecOperations
 
 CargoKitPlugin.file = buildscript.sourceFile
 
@@ -12,6 +14,9 @@ class CargoKitExtension {
 
 abstract class CargoKitBuildTask extends DefaultTask {
 
+    @Inject
+    abstract ExecOperations getExecOperations()
+
     @Input
     String buildMode
 
@@ -36,34 +41,28 @@ abstract class CargoKitBuildTask extends DefaultTask {
     @Input
     String pluginFile
 
+    @Input
+    String manifestDir
+
+    @Input
+    String rootProjectDir
+
     @Input
     List<String> targetPlatforms
 
     @TaskAction
     def build() {
-        if (project.cargokit.manifestDir == null) {
-            throw new GradleException("Property 'manifestDir' must be set on cargokit extension");
-        }
-
-        if (project.cargokit.libname == null) {
-            throw new GradleException("Property 'libname' must be set on cargokit extension");
-        }
-
         def executableName = Os.isFamily(Os.FAMILY_WINDOWS) ? "run_build_tool.cmd" : "run_build_tool.sh"
         def path = Paths.get(new File(pluginFile).parent, "..", executableName);
 
-        def manifestDir = Paths.get(project.buildscript.sourceFile.parent, project.cargokit.manifestDir)
-
-        def rootProjectDir = project.rootProject.projectDir
-
         if (!Os.isFamily(Os.FAMILY_WINDOWS)) {
-            project.exec {
-                commandLine 'chmod', '+x', path
+            execOperations.exec {
+                commandLine 'chmod', '+x', path.toString()
             }
         }
 
-        project.exec {
-            executable path
+        execOperations.exec {
+            executable path.toString()
             args "build-gradle"
             environment "CARGOKIT_ROOT_PROJECT_DIR", rootProjectDir
             environment "CARGOKIT_TOOL_TEMP_DIR", "${buildDir}/build_tool"
@@ -140,6 +139,14 @@ class CargoKitPlugin implements Plugin<Project> {
             // The task name depends on plugin properties, which are not available
             // at this point
             project.getGradle().afterProject {
+                if (project.cargokit.manifestDir == null) {
+                    throw new GradleException("Property 'manifestDir' must be set on cargokit extension");
+                }
+
+                if (project.cargokit.libname == null) {
+                    throw new GradleException("Property 'libname' must be set on cargokit extension");
+                }
+
                 def taskName = "cargokitCargoBuild${project.cargokit.libname.capitalize()}${buildType.capitalize()}";
 
                 if (project.tasks.findByName(taskName)) {
@@ -160,6 +167,8 @@ class CargoKitPlugin implements Plugin<Project> {
                     compileSdkVersion = plugin.project.android.compileSdkVersion.substring(8) as int
                     targetPlatforms = platforms
                     pluginFile = CargoKitPlugin.file
+                    manifestDir = Paths.get(project.buildscript.sourceFile.parent, project.cargokit.manifestDir).toString()
+                    rootProjectDir = project.rootProject.projectDir.toString()
                 }
                 def onTask = { newTask ->
                     if (newTask.name == "merge${buildType.capitalize()}NativeLibs") {