diff --git a/tools/run_tests/build_ruby.sh b/tools/run_tests/build_ruby.sh
index b6c4e32b7ec93fbc6fd5dbe477c883dea362ce43..259f336ef225763a40da5d3b57dae65fd2de2ca6 100755
--- a/tools/run_tests/build_ruby.sh
+++ b/tools/run_tests/build_ruby.sh
@@ -36,5 +36,7 @@ export GRPC_CONFIG=${CONFIG:-opt}
 # change to grpc's ruby directory
 cd $(dirname $0)/../../src/ruby
 
+rm -rf ./tmp
+
 bundle install
 rake compile:grpc
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index 28980c14a82e75d75507bb0e09705eedc54b0776..38da1f043af2c45fb1280d19b01b34108d4c5a06 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -253,7 +253,7 @@ class RubyLanguage(object):
                             environ=_FORCE_ENVIRON_FOR_WRAPPERS)]
 
   def make_targets(self):
-    return ['run_dep_checks']
+    return ['static_c']
 
   def build_steps(self):
     return [['tools/run_tests/build_ruby.sh']]