diff --git a/pkgs/development/python-modules/backports-zoneinfo/default.nix b/pkgs/development/python-modules/backports-zoneinfo/default.nix
index d2b6d06c4cdb..5fa4c6323169 100644
--- a/pkgs/development/python-modules/backports-zoneinfo/default.nix
+++ b/pkgs/development/python-modules/backports-zoneinfo/default.nix
@@ -7,6 +7,7 @@
 , tzdata
 , hypothesis
 , pytestCheckHook
+, fetchpatch
 }:
 
 buildPythonPackage rec {
@@ -22,7 +23,25 @@ buildPythonPackage rec {
     sha256 = "sha256-00xdDOVdDanfsjQTd3yjMN2RFGel4cWRrAA3CvSnl24=";
   };
 
+  # Make sure test data update patch applies
+  prePatch = ''
+    substituteInPlace tests/data/zoneinfo_data.json --replace \"2020a\" \"2021a\"
+  '';
+
   patches = [
+    # Update test suite's test data to zoneinfo 2022a
+    # https://github.com/pganssle/zoneinfo/pull/115
+    (fetchpatch {
+      name = "backports-zoneinfo-2022a-update-test-data1.patch";
+      url = "https://github.com/pganssle/zoneinfo/pull/115/commits/837e2a0f9f1a1332e4233f83e3648fa564a9ec9e.patch";
+      sha256 = "196knwa212mr0b7zsh8papzr3f5mii87gcjjjx1r9zzvmk3g3ri0";
+    })
+    (fetchpatch {
+      name = "backports-zoneinfo-2022a-update-test-data2.patch";
+      url = "https://github.com/pganssle/zoneinfo/pull/115/commits/9fd330265b177916d6182249439bb40d5691eb58.patch";
+      sha256 = "1zxa5bkwi8hbnh4c0qv72wv6vdp5jlxqizfjsc05ymzvwa99cf75";
+    })
+
     (substituteAll {
       name = "zoneinfo-path";
       src = ./zoneinfo.patch;