diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 8c03d7a9b4..b37aa50ba7 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -8,6 +8,7 @@
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="28"/>
     <uses-permission android:name="android.permission.VIBRATE" /> <!-- For notifications -->
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" /> <!-- For media player -->
 
     <application
         android:name=".TuskyApplication"
diff --git a/app/src/main/java/com/keylesspalace/tusky/ViewMediaActivity.kt b/app/src/main/java/com/keylesspalace/tusky/ViewMediaActivity.kt
index f0943264c9..b176d4ba9c 100644
--- a/app/src/main/java/com/keylesspalace/tusky/ViewMediaActivity.kt
+++ b/app/src/main/java/com/keylesspalace/tusky/ViewMediaActivity.kt
@@ -157,8 +157,10 @@ class ViewMediaActivity : BaseActivity(), HasAndroidInjector, ViewImageFragment.
             }
         })
 
-        // Prevent this activity from dimming or sleeping the screen if it is playing video or audio
-        if (attachments!![binding.viewPager.currentItem].attachment.type != Attachment.Type.IMAGE) {
+        // Prevent this activity from dimming or sleeping the screen if it is playing video
+        // See also WAKE_MODE in ViewVideoFragment.kt
+        val attachmentType = attachments!![binding.viewPager.currentItem].attachment.type
+        if (attachmentType == Attachment.Type.VIDEO || attachmentType == Attachment.Type.GIFV) {
             window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
         }
     }
diff --git a/app/src/main/java/com/keylesspalace/tusky/fragment/ViewVideoFragment.kt b/app/src/main/java/com/keylesspalace/tusky/fragment/ViewVideoFragment.kt
index 80fe55add6..fc6255aabc 100644
--- a/app/src/main/java/com/keylesspalace/tusky/fragment/ViewVideoFragment.kt
+++ b/app/src/main/java/com/keylesspalace/tusky/fragment/ViewVideoFragment.kt
@@ -35,6 +35,7 @@ import android.widget.FrameLayout
 import android.widget.LinearLayout
 import androidx.annotation.OptIn
 import androidx.core.view.GestureDetectorCompat
+import androidx.media3.common.C.WAKE_MODE_LOCAL
 import androidx.media3.common.MediaItem
 import androidx.media3.common.PlaybackException
 import androidx.media3.common.Player
@@ -340,6 +341,11 @@ class ViewVideoFragment : ViewMediaFragment(), Injectable {
                 addListener(mediaPlayerListener)
                 repeatMode = Player.REPEAT_MODE_ONE
                 playWhenReady = true
+                // When playing audio, allow the screen to sleep but not the CPU.
+                // See also KEEP_SCREEN_ON in ViewMediaActivity.kt.
+                if (isAudio) {
+                    setWakeMode(WAKE_MODE_LOCAL)
+                }
                 seekTo(savedSeekPosition)
                 prepare()
                 player = this