diff --git a/Dockerfile b/Dockerfile
index f1da84c..e4ab4c3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,8 +13,8 @@ ENV FACTORIO_AUTOSAVE_INTERVAL=2 \
     FACTORIO_AUTOSAVE_SLOTS=3 \
     FACTORIO_DISSALOW_COMMANDS=true \
     FACTORIO_NO_AUTO_PAUSE=false \
-    VERSION=0.12.30 \
-    FACTORIO_SHA1=77d92ecc52989f3283462fd5c9b5ba07eb6081cc
+    VERSION=0.12.31 \
+    FACTORIO_SHA1=2b225302bcea95d541da9057f05acc3d27b0fe79
 
 RUN apk --update add bash curl && \
     curl -sSL --cacert /opt/factorio.crt https://www.factorio.com/get-download/$VERSION/headless/linux64 -o /tmp/factorio_headless_x64_$VERSION.tar.gz && \
@@ -25,3 +25,4 @@ RUN apk --update add bash curl && \
 EXPOSE 34197/udp
 
 CMD ["./smart_launch.sh"]
+
diff --git a/README.md b/README.md
index 0f8efa3..3612835 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # Supported tags and respective `Dockerfile` links
 
-* `0.12.30`, `latest` [(0.12.30/Dockerfile)](https://github.com/dtandersen/docker_factorio_server/blob/master/Dockerfile)
+* `0.12.31`, `latest` [(0.12.31/Dockerfile)](https://github.com/dtandersen/docker_factorio_server/blob/dt_develop/Dockerfile)
+* `0.12.30` [(0.12.30/Dockerfile)](https://github.com/dtandersen/docker_factorio_server/blob/dt_develop/Dockerfile)
 
 [![](https://badge.imagelayers.io/dtandersen/factorio:latest.svg)](https://imagelayers.io/?images=dtandersen/factorio:latest 'Get your own badge on imagelayers.io')