diff --git a/adapters/connatix/connatix.go b/adapters/connatix/connatix.go
index 11cf7a146ab..6b80c895b71 100644
--- a/adapters/connatix/connatix.go
+++ b/adapters/connatix/connatix.go
@@ -227,6 +227,7 @@ func buildRequestImp(imp *openrtb2.Imp, ext impExtIncoming, displayManagerVer st
 			PlacementId:           ext.Bidder.PlacementId,
 			ViewabilityPercentage: ext.Bidder.ViewabilityPercentage,
 		},
+		Gpid: ext.Gpid,
 	}
 
 	var err error
diff --git a/adapters/connatix/connatixtest/exemplary/banner-app.json b/adapters/connatix/connatixtest/exemplary/banner-app.json
index 823c439b086..5e33f107138 100644
--- a/adapters/connatix/connatixtest/exemplary/banner-app.json
+++ b/adapters/connatix/connatixtest/exemplary/banner-app.json
@@ -38,7 +38,8 @@
         "ext": {
           "bidder": {
             "placementId": "some-placement-id"
-          }
+          },
+          "gpid": "test-gpid-banner-app"
         }
       }
     ]
@@ -72,7 +73,8 @@
               "ext": {
                 "connatix": {
                   "placementId": "some-placement-id"
-                }
+                },
+                "gpid": "test-gpid-banner-app"
               }
             }
           ],
@@ -158,4 +160,4 @@
       ]
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/adapters/connatix/connatixtest/exemplary/banner-web.json b/adapters/connatix/connatixtest/exemplary/banner-web.json
index a48ef5b1be5..306e2c8d00a 100644
--- a/adapters/connatix/connatixtest/exemplary/banner-web.json
+++ b/adapters/connatix/connatixtest/exemplary/banner-web.json
@@ -28,7 +28,8 @@
         "ext": {
           "bidder": {
             "placementId": "some-placement-id"
-          }
+          },
+          "gpid": "test-gpid-banner-web"
         }
       }
     ]
@@ -62,7 +63,8 @@
               "ext": {
                 "connatix": {
                   "placementId": "some-placement-id"
-                }
+                },
+                "gpid": "test-gpid-banner-web"
               }
             }
           ],
diff --git a/adapters/connatix/connatixtest/exemplary/video-app.json b/adapters/connatix/connatixtest/exemplary/video-app.json
index bff1f1b1362..06f5598d6d9 100644
--- a/adapters/connatix/connatixtest/exemplary/video-app.json
+++ b/adapters/connatix/connatixtest/exemplary/video-app.json
@@ -39,7 +39,8 @@
         "ext": {
           "bidder": {
             "placementId": "some-placement-id"
-          }
+          },
+          "gpid": "test-gpid-video-app"
         }
       }
     ]
@@ -72,7 +73,8 @@
               "ext": {
                 "connatix": {
                   "placementId": "some-placement-id"
-                }
+                },
+                "gpid": "test-gpid-video-app"
               }
             }
           ],
diff --git a/adapters/connatix/connatixtest/exemplary/video-web.json b/adapters/connatix/connatixtest/exemplary/video-web.json
index b1ab16d0b9a..992f28e0b97 100644
--- a/adapters/connatix/connatixtest/exemplary/video-web.json
+++ b/adapters/connatix/connatixtest/exemplary/video-web.json
@@ -34,7 +34,8 @@
         "ext": {
           "bidder": {
             "placementId": "some-placement-id"
-          }
+          },
+          "gpid": "test-gpid-video-web"
         }
       }
     ]
@@ -68,7 +69,8 @@
               "ext": {
                 "connatix": {
                   "placementId": "some-placement-id"
-                }
+                },
+                "gpid": "test-gpid-video-web"
               }
             }
           ],
@@ -150,4 +152,4 @@
       ]
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/adapters/connatix/connatixtest/supplemental/bad-request-no-ip.json b/adapters/connatix/connatixtest/supplemental/bad-request-no-ip.json
index 3f7dcbf064a..5a9a894805c 100644
--- a/adapters/connatix/connatixtest/supplemental/bad-request-no-ip.json
+++ b/adapters/connatix/connatixtest/supplemental/bad-request-no-ip.json
@@ -32,7 +32,8 @@
           "ext": {
             "bidder": {
               "placementId": "some-placement-id"
-            }
+            },
+            "gpid": "test-gpid"
           }
         }
       ]
@@ -43,4 +44,4 @@
           "comparison": "literal"
         }
     ]
-}
\ No newline at end of file
+}
diff --git a/adapters/connatix/connatixtest/supplemental/bid-request-eu-user.json b/adapters/connatix/connatixtest/supplemental/bid-request-eu-user.json
index a5bb8550aba..9264a89610c 100644
--- a/adapters/connatix/connatixtest/supplemental/bid-request-eu-user.json
+++ b/adapters/connatix/connatixtest/supplemental/bid-request-eu-user.json
@@ -45,7 +45,8 @@
             "bidder": {
               "placementId": "some-placement-id",
               "viewabilityPercentage": 0.6
-            }
+            },
+            "gpid": "test-gpid"
           }
         }
       ]
@@ -81,7 +82,8 @@
                   "connatix": {
                     "placementId": "some-placement-id",
                     "viewabilityPercentage": 0.6
-                  }
+                  },
+                  "gpid": "test-gpid"
                 }
               }
             ],
@@ -173,4 +175,4 @@
         ]
       }
     ]
-  }
\ No newline at end of file
+  }
diff --git a/adapters/connatix/connatixtest/supplemental/bid-request-no-user.json b/adapters/connatix/connatixtest/supplemental/bid-request-no-user.json
index 75ddabdef7c..d822f434451 100644
--- a/adapters/connatix/connatixtest/supplemental/bid-request-no-user.json
+++ b/adapters/connatix/connatixtest/supplemental/bid-request-no-user.json
@@ -42,7 +42,8 @@
             "bidder": {
               "placementId": "some-placement-id",
               "viewabilityPercentage": 0.6
-            }
+            },
+            "gpid": "test-gpid"
           }
         }
       ]
@@ -78,7 +79,8 @@
                   "connatix": {
                     "placementId": "some-placement-id",
                     "viewabilityPercentage": 0.6
-                  }
+                  },
+                  "gpid": "test-gpid"
                 }
               }
             ],
@@ -167,4 +169,4 @@
         ]
       }
     ]
-  }
\ No newline at end of file
+  }
diff --git a/adapters/connatix/connatixtest/supplemental/bid-request-us-east-user.json b/adapters/connatix/connatixtest/supplemental/bid-request-us-east-user.json
index 279047b168e..dbb83d3114a 100644
--- a/adapters/connatix/connatixtest/supplemental/bid-request-us-east-user.json
+++ b/adapters/connatix/connatixtest/supplemental/bid-request-us-east-user.json
@@ -45,7 +45,8 @@
             "bidder": {
               "placementId": "some-placement-id",
               "viewabilityPercentage": 0.6
-            }
+            },
+            "gpid": "test-gpid"
           }
         }
       ]
@@ -81,7 +82,8 @@
                   "connatix": {
                     "placementId": "some-placement-id",
                     "viewabilityPercentage": 0.6
-                  }
+                  },
+                  "gpid": "test-gpid"
                 }
               }
             ],
@@ -173,4 +175,4 @@
         ]
       }
     ]
-  }
\ No newline at end of file
+  }
diff --git a/adapters/connatix/connatixtest/supplemental/bid-request-us-west-user.json b/adapters/connatix/connatixtest/supplemental/bid-request-us-west-user.json
index 6b12ebda6cf..0584caa87a7 100644
--- a/adapters/connatix/connatixtest/supplemental/bid-request-us-west-user.json
+++ b/adapters/connatix/connatixtest/supplemental/bid-request-us-west-user.json
@@ -45,7 +45,8 @@
             "bidder": {
               "placementId": "some-placement-id",
               "viewabilityPercentage": 0.6
-            }
+            },
+            "gpid": "test-gpid"
           }
         }
       ]
@@ -81,7 +82,8 @@
                   "connatix": {
                     "placementId": "some-placement-id",
                     "viewabilityPercentage": 0.6
-                  }
+                  },
+                  "gpid": "test-gpid"
                 }
               }
             ],
@@ -173,4 +175,4 @@
         ]
       }
     ]
-  }
\ No newline at end of file
+  }
diff --git a/adapters/connatix/connatixtest/supplemental/bid-response-400-status-code.json b/adapters/connatix/connatixtest/supplemental/bid-response-400-status-code.json
index 59b77c1dae5..ae820556e08 100644
--- a/adapters/connatix/connatixtest/supplemental/bid-response-400-status-code.json
+++ b/adapters/connatix/connatixtest/supplemental/bid-response-400-status-code.json
@@ -38,7 +38,8 @@
           "ext": {
             "bidder": {
               "placementId": "some-placement-id"
-            }
+            },
+            "gpid": "test-gpid"
           }
         }
       ]
@@ -72,7 +73,8 @@
                 "ext": {
                   "connatix": {
                     "placementId": "some-placement-id"
-                  }
+                  },
+                  "gpid": "test-gpid"
                 }
               }
             ],
@@ -110,4 +112,4 @@
             "comparison": "literal"
         }
     ]
-  }
\ No newline at end of file
+  }
diff --git a/adapters/connatix/connatixtest/supplemental/bid-response-no-content.json b/adapters/connatix/connatixtest/supplemental/bid-response-no-content.json
index 6b17338d613..63f44dff39f 100644
--- a/adapters/connatix/connatixtest/supplemental/bid-response-no-content.json
+++ b/adapters/connatix/connatixtest/supplemental/bid-response-no-content.json
@@ -38,7 +38,8 @@
           "ext": {
             "bidder": {
               "placementId": "some-placement-id"
-            }
+            },
+            "gpid": "test-gpid"
           }
         }
       ]
@@ -72,7 +73,8 @@
                 "ext": {
                   "connatix": {
                     "placementId": "some-placement-id"
-                  }
+                  },
+                  "gpid": "test-gpid"
                 }
               }
             ],
@@ -104,4 +106,4 @@
       }
     ],
     "expectedBidResponses": []
-  }
\ No newline at end of file
+  }
diff --git a/adapters/connatix/connatixtest/supplemental/fail-build-display-manager-version.json b/adapters/connatix/connatixtest/supplemental/fail-build-display-manager-version.json
index 69ba22a6e80..b308eaf5a2d 100644
--- a/adapters/connatix/connatixtest/supplemental/fail-build-display-manager-version.json
+++ b/adapters/connatix/connatixtest/supplemental/fail-build-display-manager-version.json
@@ -44,7 +44,8 @@
           "ext": {
             "bidder": {
               "placementId": "some-placement-id"
-            }
+            },
+            "gpid": "test-gpid"
           }
         }
       ]
@@ -79,7 +80,8 @@
                 "ext": {
                   "connatix": {
                     "placementId": "some-placement-id"
-                  }
+                  },
+                  "gpid": "test-gpid"
                 }
               }
             ],
@@ -170,4 +172,4 @@
         ]
       }
     ]
-  }
\ No newline at end of file
+  }
diff --git a/adapters/connatix/connatixtest/supplemental/fail-currency-conversion.json b/adapters/connatix/connatixtest/supplemental/fail-currency-conversion.json
index a2364eef6c5..0784579b45b 100644
--- a/adapters/connatix/connatixtest/supplemental/fail-currency-conversion.json
+++ b/adapters/connatix/connatixtest/supplemental/fail-currency-conversion.json
@@ -36,7 +36,8 @@
           "ext": {
             "bidder": {
               "placementId": "some-placement-id"
-            }
+            },
+            "gpid": "test-gpid"
           }
         }
       ],
@@ -61,4 +62,4 @@
             "comparison": "literal"
         }
     ]
-  }
\ No newline at end of file
+  }
diff --git a/adapters/connatix/connatixtest/supplemental/invalid-bid-response.json b/adapters/connatix/connatixtest/supplemental/invalid-bid-response.json
index 9fd9b448de0..20b18910d8a 100644
--- a/adapters/connatix/connatixtest/supplemental/invalid-bid-response.json
+++ b/adapters/connatix/connatixtest/supplemental/invalid-bid-response.json
@@ -38,7 +38,8 @@
           "ext": {
             "bidder": {
               "placementId": "some-placement-id"
-            }
+            },
+            "gpid": "test-gpid"
           }
         }
       ]
@@ -72,7 +73,8 @@
                 "ext": {
                   "connatix": {
                     "placementId": "some-placement-id"
-                  }
+                  },
+                  "gpid": "test-gpid"
                 }
               }
             ],
@@ -113,4 +115,4 @@
             "comparison": "literal"
         }
     ]
-  }
\ No newline at end of file
+  }
diff --git a/adapters/connatix/connatixtest/supplemental/multi-imp-request.json b/adapters/connatix/connatixtest/supplemental/multi-imp-request.json
index 08cf01fb8c6..a188706144f 100644
--- a/adapters/connatix/connatixtest/supplemental/multi-imp-request.json
+++ b/adapters/connatix/connatixtest/supplemental/multi-imp-request.json
@@ -38,7 +38,8 @@
           "ext": {
             "bidder": {
               "placementId": "some-placement-id1"
-            }
+            },
+            "gpid": "test-gpid"
           }
         },
         {
@@ -55,8 +56,9 @@
             },
             "ext": {
                 "bidder": {
-                "placementId": "some-placement-id2"
-                }
+                    "placementId": "some-placement-id2"
+                },
+                "gpid": "test-gpid-2"
             }
         },
         {
@@ -74,7 +76,8 @@
             "ext": {
               "bidder": {
                 "placementId": 1
-              }
+              },
+              "gpid": "test-gpid-3"
             }
           }
       ]
@@ -108,7 +111,8 @@
                 "ext": {
                   "connatix": {
                     "placementId": "some-placement-id1"
-                  }
+                  },
+                  "gpid": "test-gpid"
                 }
               }
             ],
@@ -193,7 +197,8 @@
                 "ext": {
                   "connatix": {
                     "placementId": "some-placement-id2"
-                  }
+                  },
+                  "gpid": "test-gpid-2"
                 }
               }
             ],
@@ -306,4 +311,4 @@
             "comparison": "literal"
         }
     ]
-  }
\ No newline at end of file
+  }
diff --git a/adapters/connatix/connatixtest/supplemental/non-usd-currency-converted.json b/adapters/connatix/connatixtest/supplemental/non-usd-currency-converted.json
index 9a37ce8f4ea..885354a838d 100644
--- a/adapters/connatix/connatixtest/supplemental/non-usd-currency-converted.json
+++ b/adapters/connatix/connatixtest/supplemental/non-usd-currency-converted.json
@@ -36,7 +36,8 @@
           "ext": {
             "bidder": {
               "placementId": "some-placement-id"
-            }
+            },
+            "gpid": "test-gpid"
           }
         }
       ],
@@ -84,7 +85,8 @@
                 "ext": {
                   "connatix": {
                     "placementId": "some-placement-id"
-                  }
+                  },
+                  "gpid": "test-gpid"
                 }
             }
             ],
@@ -178,4 +180,4 @@
         ]
       }
     ]
-  }
\ No newline at end of file
+  }
diff --git a/adapters/connatix/connatixtest/supplemental/success-build-display-manager-version.json b/adapters/connatix/connatixtest/supplemental/success-build-display-manager-version.json
index bf74b77a03a..4f38e6a4ccc 100644
--- a/adapters/connatix/connatixtest/supplemental/success-build-display-manager-version.json
+++ b/adapters/connatix/connatixtest/supplemental/success-build-display-manager-version.json
@@ -45,7 +45,8 @@
             "bidder": {
               "placementId": "some-placement-id",
               "viewabilityPercentage": 0.6
-            }
+            },
+            "gpid": "test-gpid"
           }
         }
       ]
@@ -81,7 +82,8 @@
                   "connatix": {
                     "placementId": "some-placement-id",
                     "viewabilityPercentage": 0.6
-                  }
+                  },
+                  "gpid": "test-gpid"
                 }
               }
             ],
@@ -173,4 +175,4 @@
         ]
       }
     ]
-  }
\ No newline at end of file
+  }
diff --git a/adapters/connatix/models.go b/adapters/connatix/models.go
index 95317d7e23a..8254646b66f 100644
--- a/adapters/connatix/models.go
+++ b/adapters/connatix/models.go
@@ -10,10 +10,12 @@ type adapter struct {
 
 type impExtIncoming struct {
 	Bidder openrtb_ext.ExtImpConnatix `json:"bidder"`
+	Gpid   string                     `json:"gpid"`
 }
 
 type impExt struct {
 	Connatix impExtConnatix `json:"connatix"`
+	Gpid     string         `json:"gpid"`
 }
 
 type impExtConnatix struct {