diff --git a/core/envsetup.mk b/core/envsetup.mk
index 05957cd..4502e43 100644
--- a/core/envsetup.mk
+++ b/core/envsetup.mk
@@ -253,7 +253,7 @@
 # java code with dalvikvm/art.
 # Jars present in the runtime apex. These should match exactly the list of
 # Java libraries in the runtime apex build rule.
-RUNTIME_APEX_JARS := core-oj core-libart okhttp bouncycastle apache-xml
+RUNTIME_APEX_JARS := core-oj core-libart core-icu4j okhttp bouncycastle apache-xml
 TARGET_CORE_JARS := $(RUNTIME_APEX_JARS) conscrypt
 ifeq ($(EMMA_INSTRUMENT),true)
   ifneq ($(EMMA_INSTRUMENT_STATIC),true)
diff --git a/core/pdk_config.mk b/core/pdk_config.mk
index ce78ece..4a069d3 100644
--- a/core/pdk_config.mk
+++ b/core/pdk_config.mk
@@ -20,6 +20,7 @@
   target/common/obj/JAVA_LIBRARIES/conscrypt_intermediates \
   target/common/obj/JAVA_LIBRARIES/core-oj_intermediates \
   target/common/obj/JAVA_LIBRARIES/core-libart_intermediates \
+  target/common/obj/JAVA_LIBRARIES/core-icu4j_intermediates \
   target/common/obj/JAVA_LIBRARIES/ext_intermediates \
   target/common/obj/JAVA_LIBRARIES/framework_intermediates \
   target/common/obj/JAVA_LIBRARIES/hwbinder_intermediates \