diff --git a/CHANGELOG.md b/CHANGELOG.md
index 378c2b36..b85069fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# Unreleased
+* Alter `snac` field to `gss` in Imminence API `places` method contract.
+
 # 91.1.0
 * Add `media` method to Asset Manager.
 
diff --git a/test/pacts/imminence_api_pact_test.rb b/test/pacts/imminence_api_pact_test.rb
index 361e891c..f66cac6f 100644
--- a/test/pacts/imminence_api_pact_test.rb
+++ b/test/pacts/imminence_api_pact_test.rb
@@ -39,7 +39,7 @@
                 phone: "01202 713000",
                 postcode: "BH12 4QY",
                 service_slug: "number-plate-supplier",
-                snac: nil,
+                gss: nil,
                 source_address: "Yarrow Road Tower Park Poole  BH12 4QY",
                 text_phone: nil,
                 town: "Yarrow",