diff --git a/services/core/java/com/android/server/pm/InitAppsHelper.java b/services/core/java/com/android/server/pm/InitAppsHelper.java
index 154f32a2e436a..f6b22bc389394 100644
--- a/services/core/java/com/android/server/pm/InitAppsHelper.java
+++ b/services/core/java/com/android/server/pm/InitAppsHelper.java
@@ -24,6 +24,7 @@ import static com.android.server.pm.PackageManagerService.SCAN_AS_APK_IN_APEX;
 import static com.android.server.pm.PackageManagerService.SCAN_AS_PRIVILEGED;
 import static com.android.server.pm.PackageManagerService.SCAN_AS_SYSTEM;
 import static com.android.server.pm.PackageManagerService.SCAN_BOOTING;
+import static com.android.server.pm.PackageManagerService.SCAN_DROP_CACHE;
 import static com.android.server.pm.PackageManagerService.SCAN_FIRST_BOOT_OR_UPGRADE;
 import static com.android.server.pm.PackageManagerService.SCAN_INITIAL;
 import static com.android.server.pm.PackageManagerService.SCAN_NO_DEX;
@@ -167,7 +168,11 @@ final class InitAppsHelper {
                     sp.getFolder().getAbsolutePath())
                     || apexInfo.preInstalledApexPath.getAbsolutePath().startsWith(
                     sp.getFolder().getAbsolutePath() + File.separator)) {
-                return new ScanPartition(apexInfo.apexDirectory, sp, SCAN_AS_APK_IN_APEX);
+                int flags = SCAN_AS_APK_IN_APEX;
+                if (apexInfo.activeApexChanged) {
+                    flags |= SCAN_DROP_CACHE;
+                }
+                return new ScanPartition(apexInfo.apexDirectory, sp, flags);
             }
         }
         return null;
diff --git a/services/core/java/com/android/server/pm/InstallPackageHelper.java b/services/core/java/com/android/server/pm/InstallPackageHelper.java
index 7932897f295ad..eade8a86dfd36 100644
--- a/services/core/java/com/android/server/pm/InstallPackageHelper.java
+++ b/services/core/java/com/android/server/pm/InstallPackageHelper.java
@@ -72,6 +72,7 @@ import static com.android.server.pm.PackageManagerService.SCAN_AS_VENDOR;
 import static com.android.server.pm.PackageManagerService.SCAN_AS_VIRTUAL_PRELOAD;
 import static com.android.server.pm.PackageManagerService.SCAN_BOOTING;
 import static com.android.server.pm.PackageManagerService.SCAN_DONT_KILL_APP;
+import static com.android.server.pm.PackageManagerService.SCAN_DROP_CACHE;
 import static com.android.server.pm.PackageManagerService.SCAN_FIRST_BOOT_OR_UPGRADE;
 import static com.android.server.pm.PackageManagerService.SCAN_IGNORE_FROZEN;
 import static com.android.server.pm.PackageManagerService.SCAN_INITIAL;
@@ -152,6 +153,7 @@ import com.android.server.pm.dex.ArtManagerService;
 import com.android.server.pm.dex.DexManager;
 import com.android.server.pm.dex.DexoptOptions;
 import com.android.server.pm.dex.ViewCompiler;
+import com.android.server.pm.parsing.PackageCacher;
 import com.android.server.pm.parsing.PackageParser2;
 import com.android.server.pm.parsing.pkg.AndroidPackage;
 import com.android.server.pm.parsing.pkg.AndroidPackageUtils;
@@ -3418,6 +3420,11 @@ final class InstallPackageHelper {
                 // Ignore entries which are not packages
                 continue;
             }
+            if ((scanFlags & SCAN_DROP_CACHE) != 0) {
+                final PackageCacher cacher = new PackageCacher(mPm.getCacheDir());
+                Log.w(TAG, "Dropping cache of " + file.getAbsolutePath());
+                cacher.cleanCachedResult(file);
+            }
             parallelPackageParser.submit(file, parseFlags);
             fileCount++;
         }
diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
index 386c4372ca651..75a5ff61ee64a 100644
--- a/services/core/java/com/android/server/pm/PackageManagerService.java
+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
@@ -376,6 +376,7 @@ public class PackageManagerService implements PackageSender, TestUtilityService
     static final int SCAN_AS_SYSTEM_EXT = 1 << 21;
     static final int SCAN_AS_ODM = 1 << 22;
     static final int SCAN_AS_APK_IN_APEX = 1 << 23;
+    static final int SCAN_DROP_CACHE = 1 << 24;
 
     @IntDef(flag = true, prefix = { "SCAN_" }, value = {
             SCAN_NO_DEX,