diff --git a/target/product/runtime_libart.mk b/target/product/runtime_libart.mk
index 38a0968..a88ba3c 100644
--- a/target/product/runtime_libart.mk
+++ b/target/product/runtime_libart.mk
@@ -83,6 +83,10 @@
 PRODUCT_SYSTEM_DEFAULT_PROPERTIES += \
     dalvik.vm.dex2oat-resolve-startup-strings=true
 
+# Specify default block size of 512K to enable parallel image decompression.
+PRODUCT_SYSTEM_DEFAULT_PROPERTIES += \
+    dalvik.vm.dex2oat-max-image-block-size=524288
+
 # Enable minidebuginfo generation unless overridden.
 PRODUCT_SYSTEM_DEFAULT_PROPERTIES += \
     dalvik.vm.minidebuginfo=true \