diff --git a/extensions/metadata_exchange/Makefile b/extensions/metadata_exchange/Makefile
index 7056b1b522b..ec2f4e99b10 100644
--- a/extensions/metadata_exchange/Makefile
+++ b/extensions/metadata_exchange/Makefile
@@ -11,7 +11,7 @@ all: plugin.wasm
 
 %.wasm %.wat: %.cc ${CPP_API}/proxy_wasm_intrinsics.h ${CPP_API}/proxy_wasm_enums.h ${CPP_API}/proxy_wasm_externs.h ${CPP_API}/proxy_wasm_api.h ${CPP_API}/proxy_wasm_intrinsics.js ${CPP_CONTEXT_LIB}
 	protoc extensions/common/node_info.proto --cpp_out=.
-	em++ -s STANDALONE_WASM=1 -s EMIT_EMSCRIPTEN_METADATA=1 -s EXPORTED_FUNCTIONS=['_malloc','_free'] --std=c++17 -O3 -I${CPP_API} -I${CPP_API}/google/protobuf -I../../extensions/common -I. -I/usr/local/include -I${ABSL} --js-library ${CPP_API}/proxy_wasm_intrinsics.js ${ABSL_CPP} $*.cc ${CPP_API}/proxy_wasm_intrinsics.pb.cc ${PROTO_SRCS} ${COMMON_SRCS} ${CPP_CONTEXT_LIB} ${CPP_API}/libprotobuf.a -o $*.wasm
+	em++ -s STANDALONE_WASM=1 -s EMIT_EMSCRIPTEN_METADATA=1 -s EXPORTED_FUNCTIONS=['_malloc'] --std=c++17 -O3 -I${CPP_API} -I${CPP_API}/google/protobuf -I../../extensions/common -I. -I/usr/local/include -I${ABSL} --js-library ${CPP_API}/proxy_wasm_intrinsics.js ${ABSL_CPP} $*.cc ${CPP_API}/proxy_wasm_intrinsics.pb.cc ${PROTO_SRCS} ${COMMON_SRCS} ${CPP_CONTEXT_LIB} ${CPP_API}/libprotobuf.a -o $*.wasm
 	rm -f $*.wast
 	rm -f extensions/common/node_info.pb.*
 	chown ${uid}.${gid} $^
diff --git a/extensions/stats/Makefile b/extensions/stats/Makefile
index 349be33751a..3e6cd1b4800 100644
--- a/extensions/stats/Makefile
+++ b/extensions/stats/Makefile
@@ -12,7 +12,7 @@ all: plugin.wasm
 %.wasm %.wat: %.cc ${CPP_API}/proxy_wasm_intrinsics.h ${CPP_API}/proxy_wasm_enums.h ${CPP_API}/proxy_wasm_externs.h ${CPP_API}/proxy_wasm_api.h ${CPP_API}/proxy_wasm_intrinsics.js ${CPP_CONTEXT_LIB}
 	protoc extensions/common/node_info.proto --cpp_out=.
 	protoc config.proto --cpp_out=.
-	em++ -s STANDALONE_WASM=1 -s EMIT_EMSCRIPTEN_METADATA=1 -s EXPORTED_FUNCTIONS=['_malloc','_free'] --std=c++17 -O3 -I${CPP_API} -I${CPP_API}/google/protobuf -Iextensions/common -I. -I/usr/local/include -I${ABSL} -I. --js-library ${CPP_API}/proxy_wasm_intrinsics.js $*.cc ${CPP_API}/proxy_wasm_intrinsics.pb.cc ${PROTO_SRCS} ${COMMON_SRCS} ${CPP_CONTEXT_LIB} ${ABSL_CPP} ${CPP_API}/libprotobuf.a -o $*.wasm
+	em++ -s STANDALONE_WASM=1 -s EMIT_EMSCRIPTEN_METADATA=1 -s EXPORTED_FUNCTIONS=['_malloc'] --std=c++17 -O3 -I${CPP_API} -I${CPP_API}/google/protobuf -Iextensions/common -I. -I/usr/local/include -I${ABSL} -I. --js-library ${CPP_API}/proxy_wasm_intrinsics.js $*.cc ${CPP_API}/proxy_wasm_intrinsics.pb.cc ${PROTO_SRCS} ${COMMON_SRCS} ${CPP_CONTEXT_LIB} ${ABSL_CPP} ${CPP_API}/libprotobuf.a -o $*.wasm
 	rm -f $*.wast
 	rm -f extensions/common/node_info.pb.* extensions/stats/config.pb.*
 	chown ${uid}.${gid} $^