diff --git a/conn_pool_test.go b/conn_pool_test.go
index 5f340c16..94fa12d3 100644
--- a/conn_pool_test.go
+++ b/conn_pool_test.go
@@ -18,6 +18,8 @@ func createConnPool(t *testing.T, maxConnections int) *pgx.ConnPool {
 }
 
 func TestNewConnPool(t *testing.T) {
+	t.Parallel()
+
 	var numCallbacks int
 	afterConnect := func(c *pgx.Conn) error {
 		numCallbacks++
@@ -51,6 +53,8 @@ func TestNewConnPool(t *testing.T) {
 }
 
 func TestPoolAcquireAndReleaseCycle(t *testing.T) {
+	t.Parallel()
+
 	maxConnections := 2
 	incrementCount := int32(100)
 	completeSync := make(chan int)
@@ -125,6 +129,8 @@ func TestPoolAcquireAndReleaseCycle(t *testing.T) {
 }
 
 func TestPoolReleaseWithTransactions(t *testing.T) {
+	t.Parallel()
+
 	pool := createConnPool(t, 1)
 	defer pool.Close()
 
@@ -163,6 +169,8 @@ func TestPoolReleaseWithTransactions(t *testing.T) {
 }
 
 func TestPoolAcquireAndReleaseCycleAutoConnect(t *testing.T) {
+	t.Parallel()
+
 	maxConnections := 3
 	pool := createConnPool(t, maxConnections)
 	defer pool.Close()
@@ -202,6 +210,8 @@ func TestPoolAcquireAndReleaseCycleAutoConnect(t *testing.T) {
 }
 
 func TestPoolReleaseDiscardsDeadConnections(t *testing.T) {
+	t.Parallel()
+
 	maxConnections := 3
 	pool := createConnPool(t, maxConnections)
 	defer pool.Close()
@@ -262,6 +272,8 @@ func TestPoolReleaseDiscardsDeadConnections(t *testing.T) {
 }
 
 func TestPoolTransaction(t *testing.T) {
+	t.Parallel()
+
 	pool := createConnPool(t, 1)
 	defer pool.Close()
 
@@ -315,6 +327,8 @@ func TestPoolTransaction(t *testing.T) {
 }
 
 func TestPoolTransactionIso(t *testing.T) {
+	t.Parallel()
+
 	pool := createConnPool(t, 1)
 	defer pool.Close()
 
diff --git a/conn_test.go b/conn_test.go
index 07a73de4..c2d68ef4 100644
--- a/conn_test.go
+++ b/conn_test.go
@@ -11,6 +11,8 @@ import (
 )
 
 func TestConnect(t *testing.T) {
+	t.Parallel()
+
 	conn, err := pgx.Connect(*defaultConnConfig)
 	if err != nil {
 		t.Fatalf("Unable to establish connection: %v", err)
@@ -45,6 +47,8 @@ func TestConnect(t *testing.T) {
 }
 
 func TestConnectWithUnixSocketDirectory(t *testing.T) {
+	t.Parallel()
+
 	// /.s.PGSQL.5432
 	if unixSocketConnConfig == nil {
 		return
@@ -62,6 +66,8 @@ func TestConnectWithUnixSocketDirectory(t *testing.T) {
 }
 
 func TestConnectWithUnixSocketFile(t *testing.T) {
+	t.Parallel()
+
 	if unixSocketConnConfig == nil {
 		return
 	}
@@ -80,6 +86,8 @@ func TestConnectWithUnixSocketFile(t *testing.T) {
 }
 
 func TestConnectWithTcp(t *testing.T) {
+	t.Parallel()
+
 	if tcpConnConfig == nil {
 		return
 	}
@@ -96,6 +104,8 @@ func TestConnectWithTcp(t *testing.T) {
 }
 
 func TestConnectWithTLS(t *testing.T) {
+	t.Parallel()
+
 	if tlsConnConfig == nil {
 		return
 	}
@@ -112,6 +122,8 @@ func TestConnectWithTLS(t *testing.T) {
 }
 
 func TestConnectWithInvalidUser(t *testing.T) {
+	t.Parallel()
+
 	if invalidUserConnConfig == nil {
 		return
 	}
@@ -127,6 +139,8 @@ func TestConnectWithInvalidUser(t *testing.T) {
 }
 
 func TestConnectWithPlainTextPassword(t *testing.T) {
+	t.Parallel()
+
 	if plainPasswordConnConfig == nil {
 		return
 	}
@@ -143,6 +157,8 @@ func TestConnectWithPlainTextPassword(t *testing.T) {
 }
 
 func TestConnectWithMD5Password(t *testing.T) {
+	t.Parallel()
+
 	if md5ConnConfig == nil {
 		return
 	}
@@ -159,6 +175,8 @@ func TestConnectWithMD5Password(t *testing.T) {
 }
 
 func TestParseURI(t *testing.T) {
+	t.Parallel()
+
 	tests := []struct {
 		url        string
 		connParams pgx.ConnConfig
@@ -216,6 +234,8 @@ func TestParseURI(t *testing.T) {
 }
 
 func TestExecute(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -244,6 +264,8 @@ func TestExecute(t *testing.T) {
 }
 
 func TestExecuteFailure(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -257,6 +279,8 @@ func TestExecuteFailure(t *testing.T) {
 }
 
 func TestSelectFunc(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -280,6 +304,8 @@ func TestSelectFunc(t *testing.T) {
 }
 
 func TestSelectFuncFailure(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -318,6 +344,8 @@ func Example_connectionSelectFunc() {
 }
 
 func TestSelectRows(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -364,6 +392,8 @@ func Example_connectionSelectRows() {
 }
 
 func TestSelectRow(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -392,6 +422,8 @@ func TestSelectRow(t *testing.T) {
 }
 
 func TestConnectionSelectValue(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -433,6 +465,8 @@ func TestConnectionSelectValue(t *testing.T) {
 }
 
 func TestConnectionSelectValueTo(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -482,6 +516,8 @@ func TestConnectionSelectValueTo(t *testing.T) {
 }
 
 func TestSelectValues(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -515,6 +551,8 @@ func TestSelectValues(t *testing.T) {
 }
 
 func TestPrepare(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -592,6 +630,8 @@ func TestPrepare(t *testing.T) {
 }
 
 func TestPrepareFailure(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -605,6 +645,8 @@ func TestPrepareFailure(t *testing.T) {
 }
 
 func TestTransaction(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -711,6 +753,8 @@ func TestTransaction(t *testing.T) {
 }
 
 func TestTransactionIso(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -729,6 +773,8 @@ func TestTransactionIso(t *testing.T) {
 }
 
 func TestListenNotify(t *testing.T) {
+	t.Parallel()
+
 	listener := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, listener)
 
@@ -782,6 +828,8 @@ func TestListenNotify(t *testing.T) {
 }
 
 func TestFatalRxError(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -813,6 +861,8 @@ func TestFatalRxError(t *testing.T) {
 }
 
 func TestFatalTxError(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -836,6 +886,8 @@ func TestFatalTxError(t *testing.T) {
 }
 
 func TestCommandTag(t *testing.T) {
+	t.Parallel()
+
 	var tests = []struct {
 		commandTag   pgx.CommandTag
 		rowsAffected int64
diff --git a/data_row_reader_test.go b/data_row_reader_test.go
index 49a14d67..4116238c 100644
--- a/data_row_reader_test.go
+++ b/data_row_reader_test.go
@@ -6,6 +6,8 @@ import (
 )
 
 func TestDataRowReaderReadValue(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
diff --git a/sanitize_test.go b/sanitize_test.go
index f49ff22c..fd5f035b 100644
--- a/sanitize_test.go
+++ b/sanitize_test.go
@@ -5,6 +5,8 @@ import (
 )
 
 func TestQuoteString(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -18,6 +20,8 @@ func TestQuoteString(t *testing.T) {
 }
 
 func TestSanitizeSql(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
diff --git a/value_transcoder_test.go b/value_transcoder_test.go
index ec2efa19..8741e05c 100644
--- a/value_transcoder_test.go
+++ b/value_transcoder_test.go
@@ -6,6 +6,8 @@ import (
 )
 
 func TestTranscodeError(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -28,6 +30,8 @@ func TestTranscodeError(t *testing.T) {
 }
 
 func TestNilTranscode(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -53,6 +57,8 @@ func TestNilTranscode(t *testing.T) {
 }
 
 func TestDateTranscode(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -82,6 +88,8 @@ func TestDateTranscode(t *testing.T) {
 }
 
 func TestTimestampTzTranscode(t *testing.T) {
+	t.Parallel()
+
 	conn := mustConnect(t, *defaultConnConfig)
 	defer closeConn(t, conn)
 
@@ -111,6 +119,8 @@ func TestTimestampTzTranscode(t *testing.T) {
 }
 
 func TestInt2SliceTranscode(t *testing.T) {
+	t.Parallel()
+
 	testEqual := func(a, b []int16) {
 		if len(a) != len(b) {
 			t.Errorf("Did not transcode []int16 successfully: %v is not %v", a, b)
@@ -143,6 +153,8 @@ func TestInt2SliceTranscode(t *testing.T) {
 }
 
 func TestInt4SliceTranscode(t *testing.T) {
+	t.Parallel()
+
 	testEqual := func(a, b []int32) {
 		if len(a) != len(b) {
 			t.Errorf("Did not transcode []int32 successfully: %v is not %v", a, b)
@@ -175,6 +187,8 @@ func TestInt4SliceTranscode(t *testing.T) {
 }
 
 func TestInt8SliceTranscode(t *testing.T) {
+	t.Parallel()
+
 	testEqual := func(a, b []int64) {
 		if len(a) != len(b) {
 			t.Errorf("Did not transcode []int64 successfully: %v is not %v", a, b)