diff --git a/.gitignore b/.gitignore
index 8e22128eae6..a666712f208 100644
--- a/.gitignore
+++ b/.gitignore
@@ -54,3 +54,5 @@ prebid-server.iml
 *~
 *.swp
 *.swo
+
+.env*
\ No newline at end of file
diff --git a/Aptfile b/Aptfile
new file mode 100644
index 00000000000..ccade3c60c4
--- /dev/null
+++ b/Aptfile
@@ -0,0 +1 @@
+libatomic1
diff --git a/Procfile b/Procfile
new file mode 100644
index 00000000000..7a7dfbb28e9
--- /dev/null
+++ b/Procfile
@@ -0,0 +1 @@
+web: PBS_PORT=$PORT bin/prebid-server
diff --git a/exchange/utils_test.go b/exchange/utils_test.go
index 3585c71be36..ea9d5ac792e 100644
--- a/exchange/utils_test.go
+++ b/exchange/utils_test.go
@@ -544,6 +544,8 @@ func TestCreateSanitizedImpExt(t *testing.T) {
 				"skadn":   json.RawMessage(`"anySKAdNetwork"`),
 				"gpid":    json.RawMessage(`"anyGPID"`),
 				"tid":     json.RawMessage(`"anyTID"`),
+				"igs":     json.RawMessage(`"anyIGS"`),
+				"paapi":   json.RawMessage(`"anyPAAPI"`),
 			},
 			givenImpExtPrebid: map[string]json.RawMessage{
 				"bidder": json.RawMessage(`"anyBidder"`),
@@ -554,6 +556,8 @@ func TestCreateSanitizedImpExt(t *testing.T) {
 				"skadn":   json.RawMessage(`"anySKAdNetwork"`),
 				"gpid":    json.RawMessage(`"anyGPID"`),
 				"tid":     json.RawMessage(`"anyTID"`),
+				"igs":     json.RawMessage(`"anyIGS"`),
+				"paapi":   json.RawMessage(`"anyPAAPI"`),
 			},
 			expectedError: "",
 		},
@@ -566,6 +570,8 @@ func TestCreateSanitizedImpExt(t *testing.T) {
 				"skadn":   json.RawMessage(`"anySKAdNetwork"`),
 				"gpid":    json.RawMessage(`"anyGPID"`),
 				"tid":     json.RawMessage(`"anyTID"`),
+				"igs":     json.RawMessage(`"anyIGS"`),
+				"paapi":   json.RawMessage(`"anyPAAPI"`),
 			},
 			givenImpExtPrebid: map[string]json.RawMessage{
 				"bidder":    json.RawMessage(`"anyBidder"`),
@@ -577,6 +583,8 @@ func TestCreateSanitizedImpExt(t *testing.T) {
 				"skadn":   json.RawMessage(`"anySKAdNetwork"`),
 				"gpid":    json.RawMessage(`"anyGPID"`),
 				"tid":     json.RawMessage(`"anyTID"`),
+				"igs":     json.RawMessage(`"anyIGS"`),
+				"paapi":   json.RawMessage(`"anyPAAPI"`),
 			},
 			expectedError: "",
 		},
@@ -589,6 +597,8 @@ func TestCreateSanitizedImpExt(t *testing.T) {
 				"skadn":   json.RawMessage(`"anySKAdNetwork"`),
 				"gpid":    json.RawMessage(`"anyGPID"`),
 				"tid":     json.RawMessage(`"anyTID"`),
+				"igs":     json.RawMessage(`"anyIGS"`),
+				"paapi":   json.RawMessage(`"anyPAAPI"`),
 			},
 			givenImpExtPrebid: map[string]json.RawMessage{
 				"bidder":                json.RawMessage(`"anyBidder"`),
@@ -602,6 +612,8 @@ func TestCreateSanitizedImpExt(t *testing.T) {
 				"skadn":   json.RawMessage(`"anySKAdNetwork"`),
 				"gpid":    json.RawMessage(`"anyGPID"`),
 				"tid":     json.RawMessage(`"anyTID"`),
+				"igs":     json.RawMessage(`"anyIGS"`),
+				"paapi":   json.RawMessage(`"anyPAAPI"`),
 			},
 			expectedError: "",
 		},
diff --git a/go.mod b/go.mod
index fd9bb2b3962..996ad1bb00a 100644
--- a/go.mod
+++ b/go.mod
@@ -4,6 +4,9 @@ go 1.23.0
 
 retract v3.0.0 // Forgot to update major version in import path and module name
 
+// Magic comment that determines which Go version Heroku uses.
+// +heroku goVersion go1.23
+
 require (
 	github.com/51Degrees/device-detection-go/v4 v4.4.35
 	github.com/DATA-DOG/go-sqlmock v1.5.0
diff --git a/static/bidder-info/rubicon.yaml b/static/bidder-info/rubicon.yaml
index b4c2cfce6d2..35962347314 100644
--- a/static/bidder-info/rubicon.yaml
+++ b/static/bidder-info/rubicon.yaml
@@ -1,6 +1,10 @@
 # Contact global-support@magnite.com to ask about enabling a connection to the Magnite (formerly Rubicon) exchange.
 # We have the following regional endpoint domains: exapi-us-east, exapi-us-west, exapi-apac, exapi-eu
 # Please deploy this config in each of your datacenters with the appropriate regional subdomain
+
+# NOTE: Values in this file can (and often should) be overridden by pbs.json,
+# pbs.yaml, or environment variables.
+
 endpoint: "https://REGION.rubiconproject.com/a/api/exchange"
 endpointCompression: GZIP
 geoscope: