diff --git a/config.go b/config.go
index d1267621..2ec6ae3f 100644
--- a/config.go
+++ b/config.go
@@ -152,7 +152,7 @@ func ParseConfig(connString string) (*Config, error) {
 
 	if connString != "" {
 		// connString may be a database URL or a DSN
-		if strings.HasPrefix(connString, "postgres://") {
+		if strings.HasPrefix(connString, "postgres://") || strings.HasPrefix(connString, "postgresql://") {
 			err := addURLSettings(settings, connString)
 			if err != nil {
 				return nil, &parseConfigError{connString: connString, msg: "failed to parse as URL", err: err}
diff --git a/config_test.go b/config_test.go
index af42094d..090302a2 100644
--- a/config_test.go
+++ b/config_test.go
@@ -214,6 +214,18 @@ func TestParseConfig(t *testing.T) {
 				RuntimeParams: map[string]string{},
 			},
 		},
+		{
+			name:       "database url postgresql protocol",
+			connString: "postgresql://jack@localhost:5432/mydb?sslmode=disable",
+			config: &pgconn.Config{
+				User:          "jack",
+				Host:          "localhost",
+				Port:          5432,
+				Database:      "mydb",
+				TLSConfig:     nil,
+				RuntimeParams: map[string]string{},
+			},
+		},
 		{
 			name:       "DSN everything",
 			connString: "user=jack password=secret host=localhost port=5432 database=mydb sslmode=disable application_name=pgxtest search_path=myschema",