diff --git a/dump_postgres.go b/dump_postgres.go
index 2b101c2..4023dc3 100644
--- a/dump_postgres.go
+++ b/dump_postgres.go
@@ -1,7 +1,6 @@
 package main
 
 import (
-	"fmt"
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/client"
 	"log"
@@ -17,7 +16,9 @@ func NewPostgresDumper(container *types.ContainerJSON) *PostgresDumper {
 	}
 }
 
-func (d *PostgresDumper) buildConnStr() string {
+func (d *PostgresDumper) Dump(c *client.Client) error {
+	log.Printf("Dumping postgres database from container %s...\n", d.Container.Name)
+
 	env := parseEnv(d.Container.Config.Env)
 
 	user := "root"
@@ -25,30 +26,5 @@ func (d *PostgresDumper) buildConnStr() string {
 		user = u
 	}
 
-	db := "postgres"
-	if d, has := env["POSTGRES_DB"]; has {
-		db = d
-	}
-
-	pw := env["POSTGRES_ROOT_PASSWORD"]
-	if p, has := env["POSTGRES_PASSWORD"]; has {
-		pw = p
-	}
-
-	port := "5432"
-	if p, has := env["POSTGRES_PORT"]; has {
-		port = p
-	}
-
-	host := d.Container.NetworkSettings.DefaultNetworkSettings.IPAddress
-
-	return fmt.Sprintf("postgresql://%s:%s@%s:%s/%s", user, pw, host, port, db)
-}
-
-func (d *PostgresDumper) Dump(c *client.Client) error {
-	log.Printf("Dumping postgres database from container %s...\n", d.Container.Name)
-
-	connStr := d.buildConnStr()
-
-	return runAndSaveCommandInContainer(getDumpFilename(d.Container.Name), c, d.Container, "pg_dump", "--dbname", connStr)
+	return runAndSaveCommandInContainer(getDumpFilename(d.Container.Name), c, d.Container, "pg_dumpall", "-U", user)
 }
diff --git a/dump_postgres_test.go b/dump_postgres_test.go
deleted file mode 100644
index 8e31a7f..0000000
--- a/dump_postgres_test.go
+++ /dev/null
@@ -1,117 +0,0 @@
-package main
-
-import (
-	"github.com/docker/docker/api/types"
-	"github.com/docker/docker/api/types/container"
-	"testing"
-)
-
-func TestPostgresDumper_buildConnStr(t *testing.T) {
-	nw := &types.NetworkSettings{
-		DefaultNetworkSettings: types.DefaultNetworkSettings{
-			IPAddress: "1.2.3.4",
-		},
-	}
-	tests := []struct {
-		name      string
-		container *types.ContainerJSON
-		want      string
-	}{
-		{
-			name: "values for everything",
-			container: &types.ContainerJSON{
-				NetworkSettings: nw,
-				Config: &container.Config{
-					Env: []string{
-						"POSTGRES_USER=loremipsum",
-						"POSTGRES_DB=ipsum",
-						"POSTGRES_PASSWORD=notapassword",
-						"POSTGRES_PORT=1234",
-					},
-				},
-			},
-			want: "postgresql://loremipsum:notapassword@1.2.3.4:1234/ipsum",
-		},
-		{
-			name: "no user",
-			container: &types.ContainerJSON{
-				NetworkSettings: nw,
-				Config: &container.Config{
-					Env: []string{
-						"POSTGRES_DB=ipsum",
-						"POSTGRES_PASSWORD=notapassword",
-						"POSTGRES_PORT=1234",
-					},
-				},
-			},
-			want: "postgresql://root:notapassword@1.2.3.4:1234/ipsum",
-		},
-		{
-			name: "no password",
-			container: &types.ContainerJSON{
-				NetworkSettings: nw,
-				Config: &container.Config{
-					Env: []string{
-						"POSTGRES_USER=loremipsum",
-						"POSTGRES_DB=ipsum",
-						"POSTGRES_PORT=1234",
-					},
-				},
-			},
-			want: "postgresql://loremipsum:@1.2.3.4:1234/ipsum",
-		},
-		{
-			name: "no password, but root",
-			container: &types.ContainerJSON{
-				NetworkSettings: nw,
-				Config: &container.Config{
-					Env: []string{
-						"POSTGRES_USER=loremipsum",
-						"POSTGRES_DB=ipsum",
-						"POSTGRES_PORT=1234",
-						"POSTGRES_ROOT_PASSWORD=roooot",
-					},
-				},
-			},
-			want: "postgresql://loremipsum:roooot@1.2.3.4:1234/ipsum",
-		},
-		{
-			name: "no port",
-			container: &types.ContainerJSON{
-				NetworkSettings: nw,
-				Config: &container.Config{
-					Env: []string{
-						"POSTGRES_USER=loremipsum",
-						"POSTGRES_DB=ipsum",
-						"POSTGRES_PASSWORD=notapassword",
-					},
-				},
-			},
-			want: "postgresql://loremipsum:notapassword@1.2.3.4:5432/ipsum",
-		},
-		{
-			name: "no db",
-			container: &types.ContainerJSON{
-				NetworkSettings: nw,
-				Config: &container.Config{
-					Env: []string{
-						"POSTGRES_USER=loremipsum",
-						"POSTGRES_PASSWORD=notapassword",
-						"POSTGRES_PORT=1234",
-					},
-				},
-			},
-			want: "postgresql://loremipsum:notapassword@1.2.3.4:1234/postgres",
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			d := &PostgresDumper{
-				Container: tt.container,
-			}
-			if got := d.buildConnStr(); got != tt.want {
-				t.Errorf("buildConnStr() = %v, want %v", got, tt.want)
-			}
-		})
-	}
-}