diff --git a/src/main/java/jenkins/plugins/slack/ActiveNotifier.java b/src/main/java/jenkins/plugins/slack/ActiveNotifier.java
index 9cd9a688..0018aef8 100755
--- a/src/main/java/jenkins/plugins/slack/ActiveNotifier.java
+++ b/src/main/java/jenkins/plugins/slack/ActiveNotifier.java
@@ -13,6 +13,7 @@
 import hudson.scm.ChangeLogSet;
 import hudson.scm.ChangeLogSet.AffectedFile;
 import hudson.scm.ChangeLogSet.Entry;
+import hudson.tasks.junit.TestResultAction;
 import hudson.tasks.test.AbstractTestResultAction;
 import hudson.tasks.test.TestResult;
 import hudson.triggers.SCMTrigger;
@@ -96,6 +97,20 @@ private void notifyStart(AbstractBuild build, String message) {
     }
 
     public void finalized(AbstractBuild r) {
+        AbstractProject<?, ?> project = r.getProject();
+        Result result = r.getResult();
+        AbstractBuild<?, ?> previousBuild = project.getLastBuild();
+        do {
+            previousBuild = previousBuild.getPreviousCompletedBuild();
+        } while (previousBuild != null && previousBuild.getResult() == Result.ABORTED);
+        Result previousResult = (previousBuild != null) ? previousBuild.getResult() : Result.SUCCESS;
+        if((result.isWorseThan(previousResult) || moreTestFailuresThanPreviousBuild(r, previousBuild)) && notifier.getNotifyRegression()) {
+            getSlack(r).publish(getBuildStatusMessage(r, notifier.includeTestSummary(),
+                    notifier.includeFailedTests(), notifier.includeCustomMessage()), getBuildColor(r));
+            if (notifier.getCommitInfoChoice().showAnything()) {
+                getSlack(r).publish(getCommitList(r), getBuildColor(r));
+            }
+        }
     }
 
     public void completed(AbstractBuild r) {
@@ -127,6 +142,31 @@ public void completed(AbstractBuild r) {
         }
     }
 
+    private boolean moreTestFailuresThanPreviousBuild(AbstractBuild currentBuild, AbstractBuild<?, ?> previousBuild) {
+        if (getTestResult(currentBuild) != null && getTestResult(previousBuild) != null) {
+            if (getTestResult(currentBuild).getFailCount() > getTestResult(previousBuild).getFailCount())
+                return true;
+
+            // test if different tests failed.
+            return !getFailedTestIds(currentBuild).equals(getFailedTestIds(previousBuild));
+        }
+        return false;
+    }
+
+    private TestResultAction getTestResult(AbstractBuild build) {
+        return build.getAction(TestResultAction.class);
+    }
+
+    private Set<String> getFailedTestIds(AbstractBuild currentBuild) {
+        Set<String> failedTestIds = new HashSet<String>();
+        List<? extends TestResult> failedTests = getTestResult(currentBuild).getFailedTests();
+        for(TestResult result : failedTests) {
+            failedTestIds.add(result.getId());
+        }
+
+        return failedTestIds;
+    }
+
     String getChanges(AbstractBuild r, boolean includeCustomMessage) {
         if (!r.hasChangeSetComputed()) {
             logger.info("No change set computed...");
@@ -242,6 +282,7 @@ public static class MessageBuilder {
                                     ABORTED_STATUS_MESSAGE = "Aborted",
                                     NOT_BUILT_STATUS_MESSAGE = "Not built",
                                     UNSTABLE_STATUS_MESSAGE = "Unstable",
+                                    REGRESSION_STATUS_MESSAGE = "Regression",
                                     UNKNOWN_STATUS_MESSAGE = "Unknown";
         
         private StringBuffer message;
@@ -318,6 +359,9 @@ private String getStatusMessage(AbstractBuild r) {
             if (result == Result.UNSTABLE) {
                 return UNSTABLE_STATUS_MESSAGE;
             }
+            if (lastNonAbortedBuild != null && result.isWorseThan(previousResult)) {
+                return REGRESSION_STATUS_MESSAGE;
+            }
             return UNKNOWN_STATUS_MESSAGE;
         }
 
diff --git a/src/main/java/jenkins/plugins/slack/SlackListener.java b/src/main/java/jenkins/plugins/slack/SlackListener.java
index 1aa2ad6d..a0ba6d54 100755
--- a/src/main/java/jenkins/plugins/slack/SlackListener.java
+++ b/src/main/java/jenkins/plugins/slack/SlackListener.java
@@ -42,8 +42,8 @@ public void onDeleted(AbstractBuild r) {
 
     @Override
     public void onFinalized(AbstractBuild r) {
-        // getNotifier(r.getProject()).finalized(r);
-        // super.onFinalized(r);
+         getNotifier(r.getProject(), null).finalized(r);
+         super.onFinalized(r);
     }
 
     @SuppressWarnings("unchecked")
diff --git a/src/main/java/jenkins/plugins/slack/SlackNotifier.java b/src/main/java/jenkins/plugins/slack/SlackNotifier.java
index 4c708a2d..dd35cc5b 100755
--- a/src/main/java/jenkins/plugins/slack/SlackNotifier.java
+++ b/src/main/java/jenkins/plugins/slack/SlackNotifier.java
@@ -53,6 +53,7 @@ public class SlackNotifier extends Notifier {
     private boolean notifyAborted;
     private boolean notifyNotBuilt;
     private boolean notifyUnstable;
+    private boolean notifyRegression;
     private boolean notifyFailure;
     private boolean notifyBackToNormal;
     private boolean notifyRepeatedFailure;
@@ -153,6 +154,10 @@ public boolean getNotifyUnstable() {
         return notifyUnstable;
     }
 
+    public boolean getNotifyRegression() {
+        return notifyRegression;
+    }
+
     public boolean getNotifyBackToNormal() {
         return notifyBackToNormal;
     }
@@ -212,6 +217,11 @@ public void setNotifyUnstable(boolean notifyUnstable) {
         this.notifyUnstable = notifyUnstable;
     }
 
+    @DataBoundSetter
+    public void setNotifyRegression(boolean notifyRegression) {
+        this.notifyRegression = notifyRegression;
+    }
+
     @DataBoundSetter
     public void setNotifyBackToNormal(boolean notifyBackToNormal) {
         this.notifyBackToNormal = notifyBackToNormal;
@@ -244,7 +254,7 @@ public SlackNotifier() {
 
     public SlackNotifier(final String baseUrl, final String teamDomain, final String authToken, final boolean botUser, final String room, final String authTokenCredentialId,
                          final String sendAs, final boolean startNotification, final boolean notifyAborted, final boolean notifyFailure,
-                         final boolean notifyNotBuilt, final boolean notifySuccess, final boolean notifyUnstable, final boolean notifyBackToNormal,
+                         final boolean notifyNotBuilt, final boolean notifySuccess, final boolean notifyUnstable, final boolean notifyRegression, final boolean notifyBackToNormal,
                          final boolean notifyRepeatedFailure, final boolean includeTestSummary, final boolean includeFailedTests,
                          CommitInfoChoice commitInfoChoice, boolean includeCustomMessage, String customMessage) {
         super();
@@ -264,6 +274,7 @@ public SlackNotifier(final String baseUrl, final String teamDomain, final String
         this.notifyNotBuilt = notifyNotBuilt;
         this.notifySuccess = notifySuccess;
         this.notifyUnstable = notifyUnstable;
+        this.notifyRegression = notifyRegression;
         this.notifyBackToNormal = notifyBackToNormal;
         this.notifyRepeatedFailure = notifyRepeatedFailure;
         this.includeTestSummary = includeTestSummary;
@@ -423,6 +434,7 @@ public SlackNotifier newInstance(StaplerRequest sr, JSONObject json) {
             boolean notifyAborted = "true".equals(sr.getParameter("slackNotifyAborted"));
             boolean notifyNotBuilt = "true".equals(sr.getParameter("slackNotifyNotBuilt"));
             boolean notifyUnstable = "true".equals(sr.getParameter("slackNotifyUnstable"));
+            boolean notifyRegression = "true".equals(sr.getParameter("slackNotifyRegression"));
             boolean notifyFailure = "true".equals(sr.getParameter("slackNotifyFailure"));
             boolean notifyBackToNormal = "true".equals(sr.getParameter("slackNotifyBackToNormal"));
             boolean notifyRepeatedFailure = "true".equals(sr.getParameter("slackNotifyRepeatedFailure"));
@@ -432,7 +444,7 @@ public SlackNotifier newInstance(StaplerRequest sr, JSONObject json) {
             boolean includeCustomMessage = "on".equals(sr.getParameter("includeCustomMessage"));
             String customMessage = sr.getParameter("customMessage");
             return new SlackNotifier(baseUrl, teamDomain, token, botUser, room, tokenCredentialId, sendAs, startNotification, notifyAborted,
-                    notifyFailure, notifyNotBuilt, notifySuccess, notifyUnstable, notifyBackToNormal, notifyRepeatedFailure,
+                    notifyFailure, notifyNotBuilt, notifySuccess, notifyUnstable, notifyRegression, notifyBackToNormal, notifyRepeatedFailure,
                     includeTestSummary, includeFailedTests, commitInfoChoice, includeCustomMessage, customMessage);
         }
 
@@ -515,6 +527,7 @@ public static class SlackJobProperty extends hudson.model.JobProperty<AbstractPr
         private boolean notifyAborted;
         private boolean notifyNotBuilt;
         private boolean notifyUnstable;
+        private boolean notifyRegression;
         private boolean notifyFailure;
         private boolean notifyBackToNormal;
         private boolean notifyRepeatedFailure;
@@ -534,6 +547,7 @@ public SlackJobProperty(String teamDomain,
                                 boolean notifyNotBuilt,
                                 boolean notifySuccess,
                                 boolean notifyUnstable,
+                                boolean notifyRegression,
                                 boolean notifyBackToNormal,
                                 boolean notifyRepeatedFailure,
                                 boolean includeTestSummary,
@@ -550,6 +564,7 @@ public SlackJobProperty(String teamDomain,
             this.notifyNotBuilt = notifyNotBuilt;
             this.notifySuccess = notifySuccess;
             this.notifyUnstable = notifyUnstable;
+            this.notifyRegression = notifyRegression;
             this.notifyBackToNormal = notifyBackToNormal;
             this.notifyRepeatedFailure = notifyRepeatedFailure;
             this.includeTestSummary = includeTestSummary;
@@ -618,6 +633,11 @@ public boolean getNotifyUnstable() {
             return notifyUnstable;
         }
 
+        @Exported
+        public boolean getNotifyRegression() {
+            return notifyRegression;
+        }
+
         @Exported
         public boolean getNotifyBackToNormal() {
             return notifyBackToNormal;
diff --git a/src/main/java/jenkins/plugins/slack/config/AbstractProjectConfigMigrator.java b/src/main/java/jenkins/plugins/slack/config/AbstractProjectConfigMigrator.java
index a09bd16f..b250413f 100644
--- a/src/main/java/jenkins/plugins/slack/config/AbstractProjectConfigMigrator.java
+++ b/src/main/java/jenkins/plugins/slack/config/AbstractProjectConfigMigrator.java
@@ -79,6 +79,7 @@ private void updateSlackNotifier(final SlackNotifier slackNotifier,
         slackNotifier.setNotifyNotBuilt(slackJobProperty.getNotifyNotBuilt());
         slackNotifier.setNotifySuccess(slackJobProperty.getNotifySuccess());
         slackNotifier.setNotifyUnstable(slackJobProperty.getNotifyUnstable());
+        slackNotifier.setNotifyRegression(slackJobProperty.getNotifyRegression());
         slackNotifier.setNotifyBackToNormal(slackJobProperty.getNotifyBackToNormal());
         slackNotifier.setNotifyRepeatedFailure(slackJobProperty.getNotifyRepeatedFailure());
 
diff --git a/src/main/resources/jenkins/plugins/slack/SlackNotifier/config.jelly b/src/main/resources/jenkins/plugins/slack/SlackNotifier/config.jelly
index 1687df34..91dd4959 100755
--- a/src/main/resources/jenkins/plugins/slack/SlackNotifier/config.jelly
+++ b/src/main/resources/jenkins/plugins/slack/SlackNotifier/config.jelly
@@ -24,6 +24,11 @@
         <f:checkbox name="slackNotifyUnstable" value="true" checked="${instance.getNotifyUnstable()}"/>
     </f:entry>
 
+    <f:entry title="Notify Regression">
+        <f:checkbox name="slackNotifyRegression" value="true" checked="${instance.getNotifyRegression()}"/>
+    </f:entry>
+
+
     <f:entry title="Notify Back To Normal">
         <f:checkbox name="slackNotifyBackToNormal" value="true" checked="${instance.getNotifyBackToNormal()}"/>
     </f:entry>
diff --git a/src/test/java/jenkins/plugins/slack/SlackNotifierStub.java b/src/test/java/jenkins/plugins/slack/SlackNotifierStub.java
index c2ed563f..84150762 100644
--- a/src/test/java/jenkins/plugins/slack/SlackNotifierStub.java
+++ b/src/test/java/jenkins/plugins/slack/SlackNotifierStub.java
@@ -4,11 +4,11 @@ public class SlackNotifierStub extends SlackNotifier {
 
     public SlackNotifierStub(String baseUrl, String teamDomain, String authToken, boolean botUser, String room, String authTokenCredentialId,
                              String sendAs, boolean startNotification, boolean notifyAborted, boolean notifyFailure,
-                             boolean notifyNotBuilt, boolean notifySuccess, boolean notifyUnstable, boolean notifyBackToNormal,
+                             boolean notifyNotBuilt, boolean notifySuccess, boolean notifyUnstable, boolean notifyRegression, boolean notifyBackToNormal,
                              boolean notifyRepeatedFailure, boolean includeTestSummary, boolean includeFailedTests, 
                              CommitInfoChoice commitInfoChoice, boolean includeCustomMessage, String customMessage) {
         super(baseUrl, teamDomain, authToken, botUser, room, authTokenCredentialId, sendAs, startNotification, notifyAborted, notifyFailure,
-                notifyNotBuilt, notifySuccess, notifyUnstable, notifyBackToNormal, notifyRepeatedFailure,
+                notifyNotBuilt, notifySuccess, notifyUnstable, notifyRegression, notifyBackToNormal, notifyRepeatedFailure,
                 includeTestSummary, includeFailedTests, commitInfoChoice, includeCustomMessage, customMessage);
     }
 
diff --git a/src/test/java/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest.java b/src/test/java/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest.java
index c474200d..e84b4f48 100644
--- a/src/test/java/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest.java
+++ b/src/test/java/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest.java
@@ -50,6 +50,7 @@ public void testBasicMigration() {
         assertFalse(notifier.getNotifyAborted());
         assertFalse(notifier.getNotifyNotBuilt());
         assertFalse(notifier.getNotifyUnstable());
+        assertFalse(notifier.getNotifyRegression());
         assertTrue(notifier.getNotifyFailure());
         assertFalse(notifier.getNotifyBackToNormal());
         assertFalse(notifier.getNotifyRepeatedFailure());
@@ -77,6 +78,7 @@ public void testGlobalSettingsOverriden() {
         assertFalse(notifier.getNotifyAborted());
         assertFalse(notifier.getNotifyNotBuilt());
         assertFalse(notifier.getNotifyUnstable());
+        assertFalse(notifier.getNotifyRegression());
         assertTrue(notifier.getNotifyFailure());
         assertFalse(notifier.getNotifyBackToNormal());
         assertFalse(notifier.getNotifyRepeatedFailure());
@@ -104,6 +106,7 @@ public void testGlobalSettingsNotOverridden() throws IOException {
         assertFalse(notifier.getNotifyAborted());
         assertFalse(notifier.getNotifyNotBuilt());
         assertFalse(notifier.getNotifyUnstable());
+        assertFalse(notifier.getNotifyRegression());
         assertTrue(notifier.getNotifyFailure());
         assertFalse(notifier.getNotifyBackToNormal());
         assertFalse(notifier.getNotifyRepeatedFailure());
@@ -159,6 +162,7 @@ public void testMigrationOfSomeJobs() throws IOException {
         assertTrue(notifier.getNotifyAborted());
         assertTrue(notifier.getNotifyNotBuilt());
         assertTrue(notifier.getNotifyUnstable());
+        assertTrue(notifier.getNotifyRegression());
         assertTrue(notifier.getNotifyFailure());
         assertTrue(notifier.getNotifyBackToNormal());
         assertTrue(notifier.getNotifyRepeatedFailure());
diff --git a/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testBasicMigration/jobs/Test_Slack_Plugin/config.xml b/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testBasicMigration/jobs/Test_Slack_Plugin/config.xml
index b5c573f8..567cae21 100644
--- a/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testBasicMigration/jobs/Test_Slack_Plugin/config.xml
+++ b/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testBasicMigration/jobs/Test_Slack_Plugin/config.xml
@@ -13,6 +13,7 @@
       <notifyAborted>false</notifyAborted>
       <notifyNotBuilt>false</notifyNotBuilt>
       <notifyUnstable>false</notifyUnstable>
+      <notifyRegression>false</notifyRegression>
       <notifyFailure>true</notifyFailure>
       <notifyBackToNormal>false</notifyBackToNormal>
       <notifyRepeatedFailure>false</notifyRepeatedFailure>
diff --git a/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testGlobalSettingsNotOverridden/jobs/Test_Slack_Plugin/config.xml b/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testGlobalSettingsNotOverridden/jobs/Test_Slack_Plugin/config.xml
index 7b976eaf..38b5e660 100644
--- a/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testGlobalSettingsNotOverridden/jobs/Test_Slack_Plugin/config.xml
+++ b/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testGlobalSettingsNotOverridden/jobs/Test_Slack_Plugin/config.xml
@@ -13,6 +13,7 @@
       <notifyAborted>false</notifyAborted>
       <notifyNotBuilt>false</notifyNotBuilt>
       <notifyUnstable>false</notifyUnstable>
+      <notifyRegration>false</notifyRegration>
       <notifyFailure>true</notifyFailure>
       <notifyBackToNormal>false</notifyBackToNormal>
       <notifyRepeatedFailure>false</notifyRepeatedFailure>
diff --git a/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testGlobalSettingsOverriden/jobs/Test_Slack_Plugin/config.xml b/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testGlobalSettingsOverriden/jobs/Test_Slack_Plugin/config.xml
index b5c573f8..567cae21 100644
--- a/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testGlobalSettingsOverriden/jobs/Test_Slack_Plugin/config.xml
+++ b/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testGlobalSettingsOverriden/jobs/Test_Slack_Plugin/config.xml
@@ -13,6 +13,7 @@
       <notifyAborted>false</notifyAborted>
       <notifyNotBuilt>false</notifyNotBuilt>
       <notifyUnstable>false</notifyUnstable>
+      <notifyRegression>false</notifyRegression>
       <notifyFailure>true</notifyFailure>
       <notifyBackToNormal>false</notifyBackToNormal>
       <notifyRepeatedFailure>false</notifyRepeatedFailure>
diff --git a/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testMigrationOfSomeJobs/jobs/Test_02/config.xml b/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testMigrationOfSomeJobs/jobs/Test_02/config.xml
index 40ff1817..ac64d54e 100644
--- a/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testMigrationOfSomeJobs/jobs/Test_02/config.xml
+++ b/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testMigrationOfSomeJobs/jobs/Test_02/config.xml
@@ -13,6 +13,7 @@
       <notifyAborted>true</notifyAborted>
       <notifyNotBuilt>true</notifyNotBuilt>
       <notifyUnstable>true</notifyUnstable>
+      <notifyRegression>true</notifyRegression>
       <notifyFailure>true</notifyFailure>
       <notifyBackToNormal>true</notifyBackToNormal>
       <notifyRepeatedFailure>true</notifyRepeatedFailure>
diff --git a/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testMigrationWithNoNotifier/jobs/Test_01/config.xml b/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testMigrationWithNoNotifier/jobs/Test_01/config.xml
index 477394d2..208bb67b 100644
--- a/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testMigrationWithNoNotifier/jobs/Test_01/config.xml
+++ b/src/test/resources/jenkins/plugins/slack/config/BackwordsCompatible_1_8_SlackNotifierTest/testMigrationWithNoNotifier/jobs/Test_01/config.xml
@@ -13,6 +13,7 @@
       <notifyAborted>false</notifyAborted>
       <notifyNotBuilt>false</notifyNotBuilt>
       <notifyUnstable>false</notifyUnstable>
+      <notifyRegression>false</notifyRegression>
       <notifyFailure>false</notifyFailure>
       <notifyBackToNormal>false</notifyBackToNormal>
       <notifyRepeatedFailure>false</notifyRepeatedFailure>