diff --git a/third_party/nixpkgs/patches/pr105907-factorio-bump-1.1.5.patch b/third_party/nixpkgs/patches/pr105907-factorio-bump-1.1.5.patch
new file mode 100644
index 0000000000..53cdb3ede4
--- /dev/null
+++ b/third_party/nixpkgs/patches/pr105907-factorio-bump-1.1.5.patch
@@ -0,0 +1,48 @@
+From ff9d4cc09bebc4e0b762a7e5b68fe1a6dc1b6c19 Mon Sep 17 00:00:00 2001
+From: Luke Granger-Brown <git@lukegb.com>
+Date: Fri, 4 Dec 2020 19:38:22 +0000
+Subject: [PATCH] factorio-experimental, factorio-headless-experimental: 1.1.4
+ -> 1.1.5
+
+---
+ pkgs/games/factorio/versions.json | 16 ++++++++--------
+ 1 file changed, 8 insertions(+), 8 deletions(-)
+
+diff --git a/pkgs/games/factorio/versions.json b/pkgs/games/factorio/versions.json
+index b82652d21c107..b4c9054503559 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_x64-1.1.4.tar.xz",
++        "name": "factorio_alpha_x64-1.1.5.tar.xz",
+         "needsAuth": true,
+-        "sha256": "0gg10pk0qb44iizwvlzndjr2xkygqzaxmhp9bam7gz86b5cxs0cl",
++        "sha256": "17hm62mhldms41wv0vv2bzg8zg1mg7ga61h3yzw9dfvic661khmp",
+         "tarDirectory": "x64",
+-        "url": "https://factorio.com/get-download/1.1.4/alpha/linux64",
+-        "version": "1.1.4"
++        "url": "https://factorio.com/get-download/1.1.5/alpha/linux64",
++        "version": "1.1.5"
+       },
+       "stable": {
+         "name": "factorio_alpha_x64-1.0.0.tar.xz",
+@@ -38,12 +38,12 @@
+     },
+     "headless": {
+       "experimental": {
+-        "name": "factorio_headless_x64-1.1.4.tar.xz",
++        "name": "factorio_headless_x64-1.1.5.tar.xz",
+         "needsAuth": false,
+-        "sha256": "085lpblysh126y38z01f358xcpwmx1a6hcjlc66aw5ff6bp36yq8",
++        "sha256": "1s4ajj8kkz1q5rivv2q6c8ii73nxa11g4fs6hic3r43l52n89ml1",
+         "tarDirectory": "x64",
+-        "url": "https://factorio.com/get-download/1.1.4/headless/linux64",
+-        "version": "1.1.4"
++        "url": "https://factorio.com/get-download/1.1.5/headless/linux64",
++        "version": "1.1.5"
+       },
+       "stable": {
+         "name": "factorio_headless_x64-1.0.0.tar.xz",
diff --git a/third_party/nixpkgs/patches/series b/third_party/nixpkgs/patches/series
index 64ec99e807..ad17f1fb94 100644
--- a/third_party/nixpkgs/patches/series
+++ b/third_party/nixpkgs/patches/series
@@ -2,3 +2,4 @@ pr105275-pulseaudio-bump-14.0.patch
 pr105296-factorio-updatescript.patch
 pr105471-factorio-bump-1.1.3.patch
 pr105805-factorio-bump-1.1.4.patch
+pr105907-factorio-bump-1.1.5.patch