diff --git a/lib/endpoints.js b/lib/endpoints.js
index c41d212..e3bc321 100644
--- a/lib/endpoints.js
+++ b/lib/endpoints.js
@@ -26,10 +26,20 @@ class Endpoints {
 			})
 
 			try {
-				this.agent = new https.Agent({
-					pfx: fs.readFileSync(this.options.certificate),
-					passphrase: '',
-				})
+
+				if(this.options.pemKey){
+					this.agent = new https.Agent({
+						cert: fs.readFileSync(this.options.certificate),
+						key: fs.readFileSync(this.options.pemKey),
+						passphrase: ''
+					  })
+				}else{
+					this.agent = new https.Agent({
+						pfx: fs.readFileSync(this.options.certificate),
+						passphrase: '',
+					})
+				}
+				
 				this.options.agent = this.agent
 
 			} catch (error) {
diff --git a/package.json b/package.json
index 0a7fe33..2de6087 100755
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
 	"name": "gn-api-sdk-node",
 	"description": "Module for integration with Gerencianet API",
-	"version": "3.0.3",
+	"version": "3.0.4",
 	"author": "Gerencianet - Consultoria Tecnica | Palloma Brito | João Vitor Oliveira",
 	"license": "MIT",
 	"repository": "gerencianet/gn-api-sdk-node",