diff --git a/CHANGELOG.md b/CHANGELOG.md
index 88fbead1..64152236 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+4.3.0
+------------------
+
+* Added `FAT_ZEBRA` to the `Payment.Processor` enum.
+
 4.2.0 (2026-02-26)
 ------------------
 
diff --git a/src/main/java/com/maxmind/minfraud/request/Payment.java b/src/main/java/com/maxmind/minfraud/request/Payment.java
index 1ab41f77..dcbd8dda 100644
--- a/src/main/java/com/maxmind/minfraud/request/Payment.java
+++ b/src/main/java/com/maxmind/minfraud/request/Payment.java
@@ -173,6 +173,7 @@ public enum Processor {
         EPX,
         EWAY,
         EXACT,
+        FAT_ZEBRA,
         FIRST_ATLANTIC_COMMERCE,
         FIRST_DATA,
         FISERV,