diff --git a/build.gradle b/build.gradle
index db046c23e..18f231976 100644
--- a/build.gradle
+++ b/build.gradle
@@ -53,7 +53,7 @@ subprojects {
                     MapsUtils            : '0.6.2',
                     DropboxCoreSdk       : '3.1.3',
                     GoogleDriveApi       : 'v3-rev193-1.25.0',
-                    Exoplayer            : '2.10.8',
+                    Exoplayer            : '2.11.4',
                     Toro                 : '2.1.0',
                     LoganSquare          : '1.3.7',
                     IABv3                : '1.1.0',
diff --git a/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/media/ExoPlayerPageFragment.kt b/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/media/ExoPlayerPageFragment.kt
index 688ab27e4..73dca6a76 100644
--- a/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/media/ExoPlayerPageFragment.kt
+++ b/twidere/src/main/kotlin/org/mariotaku/twidere/fragment/media/ExoPlayerPageFragment.kt
@@ -331,7 +331,7 @@ class ExoPlayerPageFragment : MediaViewerFragment(), IBaseFragment<ExoPlayerPage
             val bandwidthMeter = DefaultBandwidthMeter()
             val videoTrackSelectionFactory = AdaptiveTrackSelection.Factory(bandwidthMeter)
             val trackSelector = DefaultTrackSelector(videoTrackSelectionFactory)
-            val player = ExoPlayerFactory.newSimpleInstance(context, trackSelector, DefaultLoadControl())
+            val player = ExoPlayerFactory.newSimpleInstance(context!!, trackSelector, DefaultLoadControl())
             if (positionBackup >= 0) {
                 player.seekTo(positionBackup)
             }