diff --git a/app/src/main/java/com/aurora/store/data/helper/DownloadHelper.kt b/app/src/main/java/com/aurora/store/data/helper/DownloadHelper.kt
index 663d640e4..44f8ade6e 100644
--- a/app/src/main/java/com/aurora/store/data/helper/DownloadHelper.kt
+++ b/app/src/main/java/com/aurora/store/data/helper/DownloadHelper.kt
@@ -162,6 +162,8 @@ class DownloadHelper @Inject constructor(
     suspend fun cancelDownload(packageName: String) {
         Log.i(TAG, "Cancelling download for $packageName")
         WorkManager.getInstance(context).cancelAllWorkByTag("$PACKAGE_NAME:$packageName")
+        // Abandon any session already staged for install so we don't leak it.
+        runCatching { appInstaller.getPreferredInstaller().cancelInstall(packageName) }
         downloadDao.updateStatus(packageName, DownloadStatus.CANCELLED)
     }
 
diff --git a/app/src/main/java/com/aurora/store/data/installer/SessionInstaller.kt b/app/src/main/java/com/aurora/store/data/installer/SessionInstaller.kt
index f3726d7f4..413ca79e0 100644
--- a/app/src/main/java/com/aurora/store/data/installer/SessionInstaller.kt
+++ b/app/src/main/java/com/aurora/store/data/installer/SessionInstaller.kt
@@ -182,6 +182,16 @@ class SessionInstaller @Inject constructor(
         }
     }
 
+    override fun cancelInstall(packageName: String) {
+        val sessionSet = enqueuedSessions
+            .find { set -> set.any { it.packageName == packageName } } ?: return
+
+        Log.i(TAG, "Abandoning staged session(s) for $packageName")
+        sessionSet.forEach { runCatching { packageInstaller.abandonSession(it.sessionId) } }
+        enqueuedSessions.remove(sessionSet)
+        removeFromInstallQueue(packageName)
+    }
+
     private fun stageInstall(
         packageName: String,
         versionCode: Long,
diff --git a/app/src/main/java/com/aurora/store/data/installer/base/IInstaller.kt b/app/src/main/java/com/aurora/store/data/installer/base/IInstaller.kt
index 2c832110f..10b02f4a6 100644
--- a/app/src/main/java/com/aurora/store/data/installer/base/IInstaller.kt
+++ b/app/src/main/java/com/aurora/store/data/installer/base/IInstaller.kt
@@ -26,4 +26,11 @@ interface IInstaller {
     fun clearQueue()
     fun isAlreadyQueued(packageName: String): Boolean
     fun removeFromInstallQueue(packageName: String)
+
+    /**
+     * Abandons any staged-but-uncommitted install session for [packageName] so cancelling
+     * a download doesn't leak a [android.content.pm.PackageInstaller] session. Default no-op
+     * for installers that don't stage sessions.
+     */
+    fun cancelInstall(packageName: String) {}
 }