diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4c618f7a..76e0a9be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+* Add go1.22.3
+* Add go1.21.10
+* go1.22 defaults to go1.22.3
+* go1.21 defaults to go1.21.10
 * Add support for heroku-24
 * Drop support for installing bzr-hosted dependencies directly; bzr-hosted
 
diff --git a/data.json b/data.json
index d74a9584..0405a1e9 100644
--- a/data.json
+++ b/data.json
@@ -2,8 +2,8 @@
   "Go": {
     "DefaultVersion": "go1.20.14",
     "VersionExpansion": {
-      "go1.22": "go1.22.2",
-      "go1.21": "go1.21.9",
+      "go1.22": "go1.22.3",
+      "go1.21": "go1.21.10",
       "go1.20.0": "go1.20",
       "go1.20": "go1.20.14",
       "go1.19.0": "go1.19",
@@ -130,8 +130,8 @@
       "go1.18.10.linux-amd64.tar.gz",
       "go1.19.13.linux-amd64.tar.gz",
       "go1.20.14.linux-amd64.tar.gz",
-      "go1.21.9.linux-amd64.tar.gz",
-      "go1.22.2.linux-amd64.tar.gz",
+      "go1.21.10.linux-amd64.tar.gz",
+      "go1.22.3.linux-amd64.tar.gz",
       "go1.4.3.linux-amd64.tar.gz",
       "go1.6.4.linux-amd64.tar.gz",
       "go1.7.6.linux-amd64.tar.gz",
diff --git a/files.json b/files.json
index e035df30..8cd8ceee 100644
--- a/files.json
+++ b/files.json
@@ -811,6 +811,10 @@
     "SHA": "b3075ae1ce5dab85f89bc7905d1632de23ca196bd8336afd93fa97434cfa55ae",
     "URL": "https://dl.google.com/go/go1.21.1.linux-amd64.tar.gz"
   },
+  "go1.21.10.linux-amd64.tar.gz": {
+    "SHA": "e330e5d977bf4f3bdc157bc46cf41afa5b13d66c914e12fd6b694ccda65fcf92",
+    "URL": "https://dl.google.com/go/go1.21.10.linux-amd64.tar.gz"
+  },
   "go1.21.2.linux-amd64.tar.gz": {
     "SHA": "f5414a770e5e11c6e9674d4cd4dd1f4f630e176d1828d3427ea8ca4211eee90d",
     "URL": "https://dl.google.com/go/go1.21.2.linux-amd64.tar.gz"
@@ -855,6 +859,10 @@
     "SHA": "5901c52b7a78002aeff14a21f93e0f064f74ce1360fce51c6ee68cd471216a17",
     "URL": "https://dl.google.com/go/go1.22.2.linux-amd64.tar.gz"
   },
+  "go1.22.3.linux-amd64.tar.gz": {
+    "SHA": "8920ea521bad8f6b7bc377b4824982e011c19af27df88a815e3586ea895f1b36",
+    "URL": "https://dl.google.com/go/go1.22.3.linux-amd64.tar.gz"
+  },
   "go1.22rc1.linux-amd64.tar.gz": {
     "SHA": "fbe9d0585b9322d44008f6baf78b391b22f64294338c6ce2b9eb6040d6373c52",
     "URL": "https://dl.google.com/go/go1.22rc1.linux-amd64.tar.gz"