diff --git a/modules/sonobiBidAdapter.js b/modules/sonobiBidAdapter.js
index a8b5bd13e05..e66a1aa2606 100644
--- a/modules/sonobiBidAdapter.js
+++ b/modules/sonobiBidAdapter.js
@@ -24,7 +24,7 @@ export const spec = {
    * @param {BidRequest[]} validBidRequests - an array of bids
    * @return {object} ServerRequest - Info describing the request to the server.
    */
-  buildRequests: (validBidRequests) => {
+  buildRequests: (validBidRequests, bidderRequest) => {
     const bids = validBidRequests.map(bid => {
       let slotIdentifier = _validateSlot(bid);
       if (/^[\/]?[\d]+[[\/].+[\/]?]?$/.test(slotIdentifier)) {
@@ -61,7 +61,13 @@ export const spec = {
       payload.ref = validBidRequests[0].params.referrer;
     }
 
-    // If there is no key_maker data, then dont make the request.
+    // Apply GDPR parameters to request.
+    if (bidderRequest && bidderRequest.gdprConsent) {
+      payload.gdpr = bidderRequest.gdprConsent.gdprApplies ? 'true' : 'false';
+      payload.consent_string = bidderRequest.gdprConsent.consentString;
+    }
+
+    // If there is no key_maker data, then don't make the request.
     if (isEmpty(data)) {
       return null;
     }
diff --git a/test/spec/modules/sonobiBidAdapter_spec.js b/test/spec/modules/sonobiBidAdapter_spec.js
index 431bf134349..d92553d6661 100644
--- a/test/spec/modules/sonobiBidAdapter_spec.js
+++ b/test/spec/modules/sonobiBidAdapter_spec.js
@@ -130,6 +130,14 @@ describe('SonobiBidAdapter', () => {
       '/7780971/sparks_prebid_LB|30b31c1838de1e': '300x250,300x600',
     };
 
+    let bidderRequests = {
+      'gdprConsent': {
+        'consentString': 'BOJ/P2HOJ/P2HABABMAAAAAZ+A==',
+        'vendorData': {},
+        'gdprApplies': true
+      },
+    };
+
     it('should return a properly formatted request', () => {
       const bidRequests = spec.buildRequests(bidRequest)
       const bidRequestsPageViewID = spec.buildRequests(bidRequest)
@@ -145,6 +153,23 @@ describe('SonobiBidAdapter', () => {
       expect(['mobile', 'tablet', 'desktop']).to.contain(bidRequests.data.vp);
     })
 
+    it('should return a properly formatted request with GDPR applies set to true', () => {
+      const bidRequests = spec.buildRequests(bidRequest, bidderRequests)
+      expect(bidRequests.url).to.equal('https://apex.go.sonobi.com/trinity.json')
+      expect(bidRequests.method).to.equal('GET')
+      expect(bidRequests.data.gdpr).to.equal('true')
+      expect(bidRequests.data.consent_string).to.equal('BOJ/P2HOJ/P2HABABMAAAAAZ+A==')
+    })
+
+    it('should return a properly formatted request with GDPR applies set to false', () => {
+      bidderRequests.gdprConsent.gdprApplies = false;
+      const bidRequests = spec.buildRequests(bidRequest, bidderRequests)
+      expect(bidRequests.url).to.equal('https://apex.go.sonobi.com/trinity.json')
+      expect(bidRequests.method).to.equal('GET')
+      expect(bidRequests.data.gdpr).to.equal('false')
+      expect(bidRequests.data.consent_string).to.equal('BOJ/P2HOJ/P2HABABMAAAAAZ+A==')
+    })
+
     it('should return a properly formatted request with hfa', () => {
       bidRequest[0].params.hfa = 'hfakey'
       bidRequest[1].params.hfa = 'hfakey'
@@ -155,6 +180,7 @@ describe('SonobiBidAdapter', () => {
       expect(bidRequests.data.s).not.to.be.empty
       expect(bidRequests.data.hfa).to.equal('hfakey')
     })
+
     it('should return null if there is nothing to bid on', () => {
       const bidRequests = spec.buildRequests([{params: {}}])
       expect(bidRequests).to.equal(null);