diff --git a/pom.xml b/pom.xml
index b7757a2..409424c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.jenkins-ci.plugins</groupId>
         <artifactId>plugin</artifactId>
-        <version>2.19</version>
+        <version>3.21</version>
         <relativePath />
     </parent>
 
@@ -15,8 +15,8 @@
     <url>http://wiki.jenkins-ci.org/display/JENKINS/Groovy+plugin</url>
 
     <properties>
-        <jenkins.version>1.580.3</jenkins.version>
-        <java.level>6</java.level>
+        <jenkins.version>2.7.3</jenkins.version>
+        <java.level>7</java.level>
     </properties>
 
     <developers>
@@ -53,7 +53,7 @@
         <dependency>
             <groupId>org.jenkins-ci.plugins</groupId>
             <artifactId>script-security</artifactId>
-            <version>1.24</version>
+            <version>1.50</version>
         </dependency>
     </dependencies>
 
diff --git a/src/main/java/hudson/plugins/groovy/StringScriptSource.java b/src/main/java/hudson/plugins/groovy/StringScriptSource.java
index 5800427..82a315b 100644
--- a/src/main/java/hudson/plugins/groovy/StringScriptSource.java
+++ b/src/main/java/hudson/plugins/groovy/StringScriptSource.java
@@ -10,6 +10,7 @@
 
 import java.io.IOException;
 import org.codehaus.groovy.control.CompilationFailedException;
+import org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox;
 import org.kohsuke.stapler.DataBoundConstructor;
 import org.kohsuke.stapler.QueryParameter;
 
@@ -67,7 +68,7 @@ public FormValidation doCheckScript(@QueryParameter String command) {
                 return FormValidation.error("Script seems to be empty string!");
 
             try {
-                new GroovyShell().parse(command);
+                new GroovyShell(GroovySandbox.createSecureCompilerConfiguration()).parse(command);
                 return FormValidation.ok("So far so good");
             } catch (CompilationFailedException e) {
                 return FormValidation.error(e.getMessage());
diff --git a/src/test/java/hudson/plugins/groovy/StringScriptSourceTest.java b/src/test/java/hudson/plugins/groovy/StringScriptSourceTest.java
new file mode 100644
index 0000000..4f98961
--- /dev/null
+++ b/src/test/java/hudson/plugins/groovy/StringScriptSourceTest.java
@@ -0,0 +1,61 @@
+/*
+ * The MIT License
+ *
+ * Copyright (c) 2019, CloudBees, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package hudson.plugins.groovy;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.jvnet.hudson.test.Issue;
+import org.jvnet.hudson.test.JenkinsRule;
+
+import static org.hamcrest.Matchers.containsString;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertThat;
+
+public class StringScriptSourceTest {
+    @Rule
+    public JenkinsRule j = new JenkinsRule();
+
+    @Issue("SECURITY-1293")
+    @Test
+    public void blockASTTest() throws Exception {
+        StringScriptSource.DescriptorImpl d = j.jenkins.getDescriptorByType(StringScriptSource.DescriptorImpl.class);
+        assertThat(d.doCheckScript("import groovy.transform.*\n" +
+                "import jenkins.model.Jenkins\n" +
+                "import hudson.model.FreeStyleProject\n" +
+                "@ASTTest(value={ assert Jenkins.getInstance().createProject(FreeStyleProject.class, \"should-not-exist\") })\n" +
+                "@Field int x\n" +
+                "echo 'hello'\n").toString(), containsString("Annotation ASTTest cannot be used in the sandbox"));
+
+        assertNull(j.jenkins.getItem("should-not-exist"));
+    }
+
+    @Issue("SECURITY-1293")
+    @Test
+    public void blockGrab() throws Exception {
+        StringScriptSource.DescriptorImpl d = j.jenkins.getDescriptorByType(StringScriptSource.DescriptorImpl.class);
+        assertThat(d.doCheckScript("@Grab(group='foo', module='bar', version='1.0')\ndef foo\n").toString(),
+                containsString("Annotation Grab cannot be used in the sandbox"));
+    }
+}