diff --git a/ThirdPartyAdapters/adcolony/CHANGELOG.md b/ThirdPartyAdapters/adcolony/CHANGELOG.md
index 302b2cf70..fccbb557b 100644
--- a/ThirdPartyAdapters/adcolony/CHANGELOG.md
+++ b/ThirdPartyAdapters/adcolony/CHANGELOG.md
@@ -1,5 +1,9 @@
 # AdColony Adapter for Google Mobile Ads SDK for Android Changelog
 
+## 3.1.2.0
+- Fixed possible NullPointerExceptions.
+- Verified compatibility with AdColony SDK version 3.1.2.
+
 ## 3.1.1.0
 - Verified compatibility with AdColony SDK version 3.1.1.
 
diff --git a/ThirdPartyAdapters/adcolony/README.md b/ThirdPartyAdapters/adcolony/README.md
index 33c40bbaf..0f6849f31 100644
--- a/ThirdPartyAdapters/adcolony/README.md
+++ b/ThirdPartyAdapters/adcolony/README.md
@@ -12,7 +12,7 @@ SDK in Google Play services.
 - Add the compile dependency with the latest version of the AdColony adapter in
   the *build.gradle* file:
   <pre><code>dependencies {
-    compile 'com.google.ads.mediation:adcolony:3.1.1.0'
+    compile 'com.google.ads.mediation:adcolony:3.1.2.0'
   }
   </code></pre>
 - To add AdColony to your mediation layer, you will need to create an app on the
diff --git a/ThirdPartyAdapters/adcolony/adcolony/build.gradle b/ThirdPartyAdapters/adcolony/adcolony/build.gradle
index 5cc9ee0d9..5f34818f1 100644
--- a/ThirdPartyAdapters/adcolony/adcolony/build.gradle
+++ b/ThirdPartyAdapters/adcolony/adcolony/build.gradle
@@ -9,7 +9,7 @@ apply plugin: 'maven-publish'
  */
 ext {
     // String property to store version name.
-    stringVersion = "3.1.1.0"
+    stringVersion = "3.1.2.0"
     // String property to store group id.
     stringGroupId = "com.google.ads.mediation"
     // String property used to set the name of the Jar created by makeJar task.
@@ -43,7 +43,7 @@ android {
 }
 
 dependencies {
-    provided 'com.adcolony:sdk:3.1.1'
+    provided 'com.adcolony:sdk:3.1.2'
     provided 'com.google.android.gms:play-services-ads:10.2.0'
 }
 
diff --git a/ThirdPartyAdapters/adcolony/adcolony/src/main/java/com/jirbo/adcolony/AdColonyAdListener.java b/ThirdPartyAdapters/adcolony/adcolony/src/main/java/com/jirbo/adcolony/AdColonyAdListener.java
index 5ec06d3d6..13c2d447b 100644
--- a/ThirdPartyAdapters/adcolony/adcolony/src/main/java/com/jirbo/adcolony/AdColonyAdListener.java
+++ b/ThirdPartyAdapters/adcolony/adcolony/src/main/java/com/jirbo/adcolony/AdColonyAdListener.java
@@ -19,8 +19,7 @@ class AdColonyAdListener extends AdColonyInterstitialListener implements AdColon
     private AdColonyAdapter _adapter;
     private boolean _rewarded;
 
-    AdColonyAdListener(AdColonyAdapter adapter, MediationInterstitialListener listener)
-    {
+    AdColonyAdListener(AdColonyAdapter adapter, MediationInterstitialListener listener) {
         _mediationInterstitialListener = listener;
         _adapter = adapter;
     }
@@ -33,83 +32,102 @@ class AdColonyAdListener extends AdColonyInterstitialListener implements AdColon
 
     @Override
     public void onRequestFilled(AdColonyInterstitial ad) {
-        _adapter.setAd(ad);
-        if (_rewarded) {
-            _mediationRewardedVideoAdListener.onAdLoaded(_adapter);
-        } else {
-            _mediationInterstitialListener.onAdLoaded(_adapter);
+        if (_adapter != null) {
+            _adapter.setAd(ad);
+            if (_rewarded) {
+                _mediationRewardedVideoAdListener.onAdLoaded(_adapter);
+            } else {
+                _mediationInterstitialListener.onAdLoaded(_adapter);
+            }
         }
     }
 
     @Override
     public void onClicked(AdColonyInterstitial ad) {
-        _adapter.setAd(ad);
-        if (_rewarded) {
-            _mediationRewardedVideoAdListener.onAdClicked(_adapter);
-        } else {
-            _mediationInterstitialListener.onAdClicked(_adapter);
+        if (_adapter != null) {
+            _adapter.setAd(ad);
+            if (_rewarded) {
+                _mediationRewardedVideoAdListener.onAdClicked(_adapter);
+            } else {
+                _mediationInterstitialListener.onAdClicked(_adapter);
+            }
         }
     }
 
     @Override
     public void onClosed(AdColonyInterstitial ad) {
-        _adapter.setAd(ad);
-        if (_rewarded) {
-            _mediationRewardedVideoAdListener.onAdClosed(_adapter);
-        } else {
-            _mediationInterstitialListener.onAdClosed(_adapter);
+        if (_adapter != null) {
+            _adapter.setAd(ad);
+            if (_rewarded) {
+                _mediationRewardedVideoAdListener.onAdClosed(_adapter);
+            } else {
+                _mediationInterstitialListener.onAdClosed(_adapter);
+            }
         }
     }
 
     @Override
     public void onExpiring(AdColonyInterstitial ad) {
-        _adapter.setAd(ad);
-        AdColony.requestInterstitial(ad.getZoneID(), this);
+        if (_adapter != null) {
+            _adapter.setAd(ad);
+            AdColony.requestInterstitial(ad.getZoneID(), this);
+        }
     }
 
     @Override
     public void onIAPEvent(AdColonyInterstitial ad, String productId, int engagementType) {
-        _adapter.setAd(ad);
+        if (_adapter != null) {
+            _adapter.setAd(ad);
+        }
     }
 
     @Override
     public void onLeftApplication(AdColonyInterstitial ad) {
-        _adapter.setAd(ad);
-        if (_rewarded) {
-            _mediationRewardedVideoAdListener.onAdLeftApplication(_adapter);
-        } else {
-            _mediationInterstitialListener.onAdLeftApplication(_adapter);
+        if (_adapter != null) {
+            _adapter.setAd(ad);
+            if (_rewarded) {
+                _mediationRewardedVideoAdListener.onAdLeftApplication(_adapter);
+            } else {
+                _mediationInterstitialListener.onAdLeftApplication(_adapter);
+            }
         }
     }
 
     @Override
     public void onOpened(AdColonyInterstitial ad) {
-        _adapter.setAd(ad);
-        if (_rewarded) {
-            _mediationRewardedVideoAdListener.onAdOpened(_adapter);
-            _mediationRewardedVideoAdListener.onVideoStarted(_adapter);
-        } else {
-            _mediationInterstitialListener.onAdOpened(_adapter);
+        if (_adapter != null) {
+            _adapter.setAd(ad);
+            if (_rewarded) {
+                _mediationRewardedVideoAdListener.onAdOpened(_adapter);
+                _mediationRewardedVideoAdListener.onVideoStarted(_adapter);
+            } else {
+                _mediationInterstitialListener.onAdOpened(_adapter);
+            }
         }
     }
 
     @Override
     public void onRequestNotFilled(AdColonyZone zone) {
-        _adapter.setAd(null);
-        if (_rewarded) {
-            AdColony.removeRewardListener();
-            _mediationRewardedVideoAdListener.
-                    onAdFailedToLoad(_adapter, AdRequest.ERROR_CODE_NO_FILL);
-        } else {
-            _mediationInterstitialListener.onAdFailedToLoad(_adapter, AdRequest.ERROR_CODE_NO_FILL);
+        if (_adapter != null) {
+            _adapter.setAd(null);
+            if (_rewarded) {
+                AdColony.removeRewardListener();
+                _mediationRewardedVideoAdListener
+                        .onAdFailedToLoad(_adapter, AdRequest.ERROR_CODE_NO_FILL);
+            } else {
+                _mediationInterstitialListener
+                        .onAdFailedToLoad(_adapter, AdRequest.ERROR_CODE_NO_FILL);
+            }
         }
     }
 
     @Override
     public void onReward(com.adcolony.sdk.AdColonyReward reward) {
-        AdColonyReward adReward =
-                new AdColonyReward(reward.getRewardName(), reward.getRewardAmount());
-        _mediationRewardedVideoAdListener.onRewarded(_adapter, adReward);
+        if (_adapter != null) {
+            AdColonyReward adReward =
+                    new AdColonyReward(reward.getRewardName(), reward.getRewardAmount());
+            _mediationRewardedVideoAdListener.onRewarded(_adapter, adReward);
+        }
     }
 
     void destroy() {