diff --git a/cas-client-integration-atlassian/pom.xml b/cas-client-integration-atlassian/pom.xml
index 4470c36..a8dc320 100644
--- a/cas-client-integration-atlassian/pom.xml
+++ b/cas-client-integration-atlassian/pom.xml
@@ -517,6 +517,23 @@
       </exclusions>
     </dependency>
 
+    <dependency>
+      <groupId>com.atlassian.jira</groupId>
+      <artifactId>jira-core</artifactId>
+      <version>4.4</version>
+      <scope>provided</scope>
+      <type>jar</type>
+      <exclusions>
+        <exclusion>
+          <groupId>jta</groupId>
+          <artifactId>jta</artifactId>
+        </exclusion>
+        <exclusion>
+          <groupId>jndi</groupId>
+          <artifactId>jndi</artifactId>
+        </exclusion>               
+      </exclusions>
+    </dependency>
     <dependency>
       <groupId>org.jasig.cas.client</groupId>
       <artifactId>cas-client-core</artifactId>
diff --git a/cas-client-integration-atlassian/src/main/java/org/jasig/cas/client/integration/atlassian/Jira44CasAuthenticator.java b/cas-client-integration-atlassian/src/main/java/org/jasig/cas/client/integration/atlassian/Jira44CasAuthenticator.java
new file mode 100644
index 0000000..493aa61
--- /dev/null
+++ b/cas-client-integration-atlassian/src/main/java/org/jasig/cas/client/integration/atlassian/Jira44CasAuthenticator.java
@@ -0,0 +1,91 @@
+/**
+ * Licensed to Jasig under one or more contributor license
+ * agreements. See the NOTICE file distributed with this work
+ * for additional information regarding copyright ownership.
+ * Jasig licenses this file to you under the Apache License,
+ * Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a
+ * copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.jasig.cas.client.integration.atlassian;
+
+import com.atlassian.jira.security.login.JiraSeraphAuthenticator;
+import com.atlassian.seraph.auth.AuthenticatorException;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.jasig.cas.client.util.AbstractCasFilter;
+import org.jasig.cas.client.validation.Assertion;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.security.Principal;
+
+/**
+ * Extension of JiraSeraphAuthenticator to allow people to configure 
+ * JIRA 4.4 and above to authenticate via Jasig CAS
+ *
+ * @author Scott Battaglia
+ * @author Martin Stiborský
+ * @version $Revision$ $Date$
+ * @since 3.3.0
+ */
+public final class Jira44CasAuthenticator extends JiraSeraphAuthenticator {
+
+    /** Jira43CasAuthenticator.java */
+    private static final long serialVersionUID = 3852011252741183166L;
+
+    private static final Log LOG = LogFactory.getLog(Jira44CasAuthenticator.class);
+
+    public Principal getUser(final HttpServletRequest request, final HttpServletResponse response) {
+        final HttpSession session = request.getSession();
+
+        // user already exists
+        if (session.getAttribute(LOGGED_IN_KEY) != null) {
+            if (LOG.isDebugEnabled()) {
+                LOG.debug("Session found; user already logged in.");
+            }
+            return (Principal) session.getAttribute(LOGGED_IN_KEY);
+        }
+
+        final Assertion assertion = (Assertion) session.getAttribute(AbstractCasFilter.CONST_CAS_ASSERTION);
+
+        if (assertion != null) {
+            final Principal p = getUser(assertion.getPrincipal().getName());
+
+            if (LOG.isDebugEnabled()) {
+                LOG.debug("Logging in [" + p.getName() + "] from CAS.");
+            }
+
+            session.setAttribute(LOGGED_IN_KEY, p);
+            session.setAttribute(LOGGED_OUT_KEY, null);
+            return p;
+        }
+
+        return super.getUser(request, response);
+    }
+
+    public boolean logout(final HttpServletRequest request, final HttpServletResponse response) throws AuthenticatorException {
+        final HttpSession session = request.getSession();
+        final Principal p = (Principal) session.getAttribute(LOGGED_IN_KEY);
+
+        if (LOG.isDebugEnabled()) {
+            LOG.debug("Logging out [" + p.getName() + "] from CAS.");
+        }
+
+        session.setAttribute(LOGGED_OUT_KEY, p);
+        session.setAttribute(LOGGED_IN_KEY, null);
+        session.setAttribute(AbstractCasFilter.CONST_CAS_ASSERTION, null);
+        return true;
+    }
+}
\ No newline at end of file