diff --git a/adapters/adnuntius/adnuntius.go b/adapters/adnuntius/adnuntius.go
index f556081ae70..da66e4433ec 100644
--- a/adapters/adnuntius/adnuntius.go
+++ b/adapters/adnuntius/adnuntius.go
@@ -74,10 +74,19 @@ func (a *adapter) MakeRequests(request *openrtb2.BidRequest, reqInfo *adapters.E
 	return a.generateRequests(*request)
 }
 
-func setHeaders() http.Header {
+func setHeaders(ortbRequest openrtb2.BidRequest) http.Header {
+
 	headers := http.Header{}
 	headers.Add("Content-Type", "application/json;charset=utf-8")
 	headers.Add("Accept", "application/json")
+	if ortbRequest.Device != nil {
+		if ortbRequest.Device.IP != "" {
+			headers.Add("X-Forwarded-For", ortbRequest.Device.IP)
+		}
+		if ortbRequest.Device.UA != "" {
+			headers.Add("user-agent", ortbRequest.Device.UA)
+		}
+	}
 	return headers
 }
 
@@ -113,7 +122,7 @@ func makeEndpointUrl(ortbRequest openrtb2.BidRequest, a *adapter) (string, []err
 func (a *adapter) generateRequests(ortbRequest openrtb2.BidRequest) ([]*adapters.RequestData, []error) {
 	var requestData []*adapters.RequestData
 	networkAdunitMap := make(map[string][]adnAdunit)
-	headers := setHeaders()
+	headers := setHeaders(ortbRequest)
 
 	endpoint, err := makeEndpointUrl(ortbRequest, a)
 	if err != nil {
diff --git a/adapters/adnuntius/adnuntiustest/supplemental/send-header-information.json b/adapters/adnuntius/adnuntiustest/supplemental/send-header-information.json
new file mode 100644
index 00000000000..96ddff858ac
--- /dev/null
+++ b/adapters/adnuntius/adnuntiustest/supplemental/send-header-information.json
@@ -0,0 +1,122 @@
+{
+    "mockBidRequest": {
+        "id": "test-request-id",
+        "user": {
+            "id": "1kjh3429kjh295jkl",
+            "ext": {
+                "consent": "CONSENT_STRING"
+            }
+        },
+        "device": {
+            "ip": "158.174.81.143",
+            "ua": "Mozilla/5.0 (Linux; Android 8.0; Pixel 2 Build/OPD3.170816.012) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.93 Mobile Safari/537.36"
+        },
+        "imp": [
+            {
+                "id": "test-imp-id",
+                "banner": {
+                    "format": [
+                        {
+                            "w": 300,
+                            "h": 250
+                        },
+                        {
+                            "w": 300,
+                            "h": 600
+                        }
+                    ]
+                },
+                "ext": {
+                    "bidder": {
+                        "auId": "123"
+                    }
+                }
+            }
+        ]
+    },
+
+    "httpCalls": [
+        {
+            "expectedRequest": {
+                "headers": {
+                    "Content-Type": [
+                        "application/json;charset=utf-8"
+                    ],
+                    "Accept": [
+                        "application/json"
+                    ],
+                    "X-Forwarded-For": [
+                        "158.174.81.143"
+                    ],
+                    "User-Agent": [
+                        "Mozilla/5.0 (Linux; Android 8.0; Pixel 2 Build/OPD3.170816.012) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.93 Mobile Safari/537.36"
+                    ]
+                },
+                "uri": "http://whatever.url?format=json&tzo=0",
+                "body": {
+                    "adUnits": [
+                        {
+                            "auId": "123",
+                            "targetId": "123-test-imp-id"
+                        }
+                    ],
+                    "metaData": {
+                        "usi": "1kjh3429kjh295jkl"
+                    },
+                    "context": "unknown"
+                }
+            },
+            "mockResponse": {
+                "status": 200,
+                "body": {
+                    "adUnits": [
+                        {
+                            "auId": "0000000000000123",
+                            "targetId": "123-test-imp-id",
+                            "html": "<ADCODE>",
+                            "responseId": "adn-rsp-900646517",
+                            "ads": [
+                                {
+                                    "destinationUrls": {
+                                        "url": "http://www.google.com"
+                                    },
+                                    "bid": {
+                                        "amount": 20.0,
+                                        "currency": "NOK"
+                                    },
+                                    "adId": "adn-id-1559784094",
+                                    "creativeWidth": "980",
+                                    "creativeHeight": "240",
+                                    "creativeId": "jn9hpzvlsf8cpdmm",
+                                    "lineItemId": "q7y9qm5b0xt9htrv"
+                                }
+                            ]
+                        }
+                    ]
+                }
+            }
+        }
+    ],
+    "expectedBidResponses": [
+        {
+            "bids": [
+                {
+                    "bid": {
+                        "id": "adn-id-1559784094",
+                        "impid": "test-imp-id",
+                        "price": 20000,
+                        "adm": "<ADCODE>",
+                        "adid": "adn-id-1559784094",
+                        "adomain": ["google.com"],
+                        "cid": "q7y9qm5b0xt9htrv",
+                        "crid": "jn9hpzvlsf8cpdmm",
+                        "w": 980,
+                        "h": 240
+                    },
+                    "type": "banner"
+                }
+            ],
+            "currency": "NOK"
+        }
+    ]
+}