diff --git a/Makefile b/Makefile
index 146f8cdb5..2f456b1ca 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,6 @@ CGO_CFLAGS:=-I$(CURDIR)/vendor/libucl/include
 CGO_LDFLAGS:=-L$(CURDIR)/vendor/libucl
 LIBUCL_NAME=libucl.a
 TEST?=./...
-TESTARGS?=-timeout=5s
 
 # Windows-only
 ifeq ($(OS), Windows_NT)
@@ -23,7 +22,7 @@ dev: libucl
 libucl: vendor/libucl/$(LIBUCL_NAME)
 
 test: libucl
-	go test $(TEST) $(TESTARGS)
+	go test $(TEST) $(TESTARGS) -timeout=10s
 
 testacc: libucl
 	@if [ "$(TEST)" = "./..." ]; then \