diff --git a/pkgs/games/factorio/versions.json b/pkgs/games/factorio/versions.json
index 51fa5b0c5c6a..9d0cb98938d6 100644
--- a/pkgs/games/factorio/versions.json
+++ b/pkgs/games/factorio/versions.json
@@ -2,12 +2,12 @@
   "x86_64-linux": {
     "alpha": {
       "experimental": {
-        "name": "factorio_alpha_x64-1.1.76.tar.xz",
+        "name": "factorio_alpha_x64-1.1.77.tar.xz",
         "needsAuth": true,
-        "sha256": "1kz93imyddivpp8zslggldm8zyb9j0zdj67pgkxazn8fd9avrq1p",
+        "sha256": "1qcjp51sykq0ygq4j4zih3yp1x517b2j54xfyi8g4minfk57zwk9",
         "tarDirectory": "x64",
-        "url": "https://factorio.com/get-download/1.1.76/alpha/linux64",
-        "version": "1.1.76"
+        "url": "https://factorio.com/get-download/1.1.77/alpha/linux64",
+        "version": "1.1.77"
       },
       "stable": {
         "name": "factorio_alpha_x64-1.1.76.tar.xz",