diff --git a/tests/jenkins.sh b/tests/jenkins.sh
index 5b53e93..dc583ba 100755
--- a/tests/jenkins.sh
+++ b/tests/jenkins.sh
@@ -51,7 +51,7 @@ run_test python tests/test.py --with-coverage -b "-m aes-256-cfb -k testrc4 -s 1
 run_test python tests/test.py --with-coverage --should-fail --url="http://127.0.0.1/" -b "-m aes-256-cfb -k testrc4 -s 127.0.0.1 -p 8388 --forbidden-ip=127.0.0.1,::1,8.8.8.8" -a "-m aes-256-cfb -k testrc4 -s 127.0.0.1 -p 8388 -l 1081 -t 30 -b 127.0.0.1"
 
 # test if DNS works
-run_test python tests/test.py --with-coverage -c tests/aes.json --url="https://clients1.google.com/generate_204"
+run_test python tests/test.py --with-coverage -c tests/aes.json --url="https://www.google.com/"
 
 # test localhost is in the forbidden list by default
 run_test python tests/test.py --with-coverage --should-fail --tcp-only --url="http://127.0.0.1/" -b "-m aes-256-cfb -k testrc4 -s 127.0.0.1 -p 8388" -a "-m aes-256-cfb -k testrc4 -s 127.0.0.1 -p 8388 -l 1081 -t 30 -b 127.0.0.1"
diff --git a/tests/test.py b/tests/test.py
index 29b57d4..85bd007 100755
--- a/tests/test.py
+++ b/tests/test.py
@@ -44,7 +44,7 @@ parser.add_argument('--dns', type=str, default='8.8.8.8')
 config = parser.parse_args()
 
 if config.with_coverage:
-    python = ['coverage', 'run', '-p', '-a']
+    python = ['coverage', 'run', '-a']
 
 client_args = python + ['shadowsocks/local.py', '-v']
 server_args = python + ['shadowsocks/server.py', '-v']
diff --git a/tests/test_command.sh b/tests/test_command.sh
index be05704..8225740 100755
--- a/tests/test_command.sh
+++ b/tests/test_command.sh
@@ -2,7 +2,7 @@
 
 . tests/assert.sh
 
-PYTHON="coverage run -a -p"
+PYTHON="coverage run -a"
 LOCAL="$PYTHON shadowsocks/local.py"
 SERVER="$PYTHON shadowsocks/server.py"
 
diff --git a/tests/test_daemon.sh b/tests/test_daemon.sh
index 40f35ef..1acddc0 100755
--- a/tests/test_daemon.sh
+++ b/tests/test_daemon.sh
@@ -18,7 +18,7 @@ function run_test {
 for module in local server
 do
 
-command="coverage run -p -a shadowsocks/$module.py"
+command="coverage run -a shadowsocks/$module.py"
 
 mkdir -p tmp
 
diff --git a/tests/test_graceful_restart.sh b/tests/test_graceful_restart.sh
index d91ba92..eb4bc0f 100755
--- a/tests/test_graceful_restart.sh
+++ b/tests/test_graceful_restart.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-PYTHON="coverage run -p -a"
+PYTHON="coverage run -a"
 URL=http://127.0.0.1/file
 
 
diff --git a/tests/test_large_file.sh b/tests/test_large_file.sh
index 33bcb59..7a6aec8 100755
--- a/tests/test_large_file.sh
+++ b/tests/test_large_file.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-PYTHON="coverage run -p -a"
+PYTHON="coverage run -a"
 URL=http://127.0.0.1/file
 
 mkdir -p tmp
diff --git a/tests/test_udp_src.sh b/tests/test_udp_src.sh
index d356581..4a07a23 100755
--- a/tests/test_udp_src.sh
+++ b/tests/test_udp_src.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-PYTHON="coverage run -p -a"
+PYTHON="coverage run -a"
 
 mkdir -p tmp