diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5639b5cc..b327029e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+## 0.4-1 (November 22, 2019)
+
+IMPROVEMENTS:
+
+* Add support to set upstream server parameters: `max_conns`, `max_fails`, `fail_timeout` and `slow_start` in the configuration file. https://github.com/nginxinc/nginx-asg-sync/pull/33
+* Add support to use wildcards in the names of AWS Auto Scaling groups. https://github.com/nginxinc/nginx-asg-sync/pull/29/
+* Allow nginx-asg-sync to detect the region where it is running (use `region: self` in the configuration file). https://github.com/nginxinc/nginx-asg-sync/pull/27
+
 ## 0.3-1 (September 4, 2019)
 
 IMPROVEMENTS:
diff --git a/build/package/debian/changelog b/build/package/debian/changelog
index 0f233c85..a089742d 100644
--- a/build/package/debian/changelog
+++ b/build/package/debian/changelog
@@ -1,3 +1,10 @@
+nginx-asg-sync (0.4-1-%%CODENAME%%) unstable; urgency=low
+
+  * 0.4-1
+  * Add support to set upstream server parameters (max_conns, max_fails, fail_timeout and slow_start)
+  * Add support to use wildcards in AWS autoscaling groups
+  * Allow to use the same AWS region as the instance where the nginx-asg-sync is running
+
 nginx-asg-sync (0.3-1-%%CODENAME%%) unstable; urgency=low
 
   * 0.3-1
diff --git a/build/package/rpm/SPECS/nginx-asg-sync.spec b/build/package/rpm/SPECS/nginx-asg-sync.spec
index 6b1e74db..70c8bec1 100644
--- a/build/package/rpm/SPECS/nginx-asg-sync.spec
+++ b/build/package/rpm/SPECS/nginx-asg-sync.spec
@@ -3,7 +3,7 @@
 
 Summary: NGINX Plus Integration with Cloud Autoscaling
 Name: nginx-asg-sync
-Version: 0.3
+Version: 0.4
 Release: 1%{?dist}
 Vendor: Nginx Software, Inc.
 URL: https://github.com/nginxinc/nginx-asg-sync
@@ -110,6 +110,12 @@ if [ $1 -ge 1 ]; then
 fi
 
 %changelog
+* Fri Nov 22 2019 Raul Marrero <raul.marrero@nginx.com>
+- 0.4-1
+- Add support to set upstream server parameters (max_conns, max_fails, fail_timeout and slow_start)
+- Add support to use wildcards in AWS autoscaling groups
+- Allow to use the same AWS region as the instance where the nginx-asg-sync is running
+
 * Wed Sep 4 2019 Raul Marrero <raul.marrero@nginx.com>
 - 0.3-1
 - Add support for Azure Virtual Machine Scale Sets
diff --git a/cmd/sync/main.go b/cmd/sync/main.go
index 67b16821..25aa50a2 100644
--- a/cmd/sync/main.go
+++ b/cmd/sync/main.go
@@ -17,7 +17,7 @@ import (
 
 var configFile = flag.String("config_path", "/etc/nginx/config.yaml", "Path to the config file")
 var logFile = flag.String("log_path", "", "Path to the log file. If the file doesn't exist, it will be created")
-var version = "0.3-1"
+var version = "0.4-1"
 
 const connTimeoutInSecs = 10
 
diff --git a/cmd/sync/parameters.go b/cmd/sync/parameters.go
index a8782bff..07900aa7 100644
--- a/cmd/sync/parameters.go
+++ b/cmd/sync/parameters.go
@@ -17,4 +17,4 @@ func getSlowStartOrDefault(slowStart string) string {
 	}
 
 	return slowStart
-}
\ No newline at end of file
+}
diff --git a/cmd/sync/parameters_test.go b/cmd/sync/parameters_test.go
index f9d94c73..6a543e99 100644
--- a/cmd/sync/parameters_test.go
+++ b/cmd/sync/parameters_test.go
@@ -5,16 +5,16 @@ import (
 )
 
 func TestGetFailTimeoutOrDefault(t *testing.T) {
-	tests := []struct{
-		input string
+	tests := []struct {
+		input    string
 		expected string
 	}{
 		{
-			input: "",
+			input:    "",
 			expected: defaultFailTimeout,
 		},
 		{
-			input: "10s",
+			input:    "10s",
 			expected: "10s",
 		},
 	}
@@ -28,16 +28,16 @@ func TestGetFailTimeoutOrDefault(t *testing.T) {
 }
 
 func TestGetSlowStartOrDefault(t *testing.T) {
-	tests := []struct{
-		input string
+	tests := []struct {
+		input    string
 		expected string
 	}{
 		{
-			input: "",
+			input:    "",
 			expected: defaultSlowStart,
 		},
 		{
-			input: "10s",
+			input:    "10s",
 			expected: "10s",
 		},
 	}
@@ -48,4 +48,4 @@ func TestGetSlowStartOrDefault(t *testing.T) {
 			t.Errorf("getSlowStartOrDefault(%v) returned %v but expected %v", test.input, result, test.expected)
 		}
 	}
-}
\ No newline at end of file
+}