diff --git a/tools/gce/linux_performance_worker_init.sh b/tools/gce/linux_performance_worker_init.sh
index c7272b61a5fe6b65072315ec90adbea93b106b45..478e04ef37095e7565c3770d5de274050714fe2f 100755
--- a/tools/gce/linux_performance_worker_init.sh
+++ b/tools/gce/linux_performance_worker_init.sh
@@ -82,9 +82,12 @@ sudo apt-get install -y libgflags-dev libgtest-dev libc++-dev clang
 
 # Python dependencies
 sudo pip install tabulate
+sudo pip install google-api-python-client
+
 curl -O https://bootstrap.pypa.io/get-pip.py
 sudo pypy get-pip.py
 sudo pypy -m pip install tabulate
+sudo pip install google-api-python-client
 
 # Node dependencies (nvm has to be installed under user jenkins)
 touch .profile
@@ -102,4 +105,8 @@ sudo apt-get install -y mono-devel nuget
 gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
 curl -sSL https://get.rvm.io | bash -s stable --ruby
 
+# Install bundler (prerequisite for gRPC Ruby)
+source ~/.rvm/scripts/rvm
+gem install bundler
+
 # Java dependencies - nothing as we already have Java JDK 8
diff --git a/tools/jenkins/run_performance.sh b/tools/jenkins/run_performance.sh
index 2ad87f16a54fabd9a60ff42ab93db7ba06e55fcf..903a14421512889660e17c16941ad93a1d65894b 100755
--- a/tools/jenkins/run_performance.sh
+++ b/tools/jenkins/run_performance.sh
@@ -34,10 +34,4 @@ set -ex
 # Enter the gRPC repo root
 cd $(dirname $0)/../..
 
-[[ $* =~ '--latency_profile' ]] \
-	&& tools/profiling/latency_profile/run_latency_profile.sh \
-	|| true
-
-tools/run_tests/run_performance_tests.py -l c++
-
-wait
+tools/run_tests/run_performance_tests.py -l c++ node ruby csharp