diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 89ea7ab..b7039c1 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,10 +1,63 @@
 stages:
   - check
+  - update
   - build
   - release
 
+version_update:
+  stage: update
+  tags:
+    - nix
+  rules:
+    - if: '$CI_PIPELINE_SOURCE == "manual"'
+  artifacts:
+    reports:
+      dotenv: update.env
+  script:
+    - nix run ".#update" > update.env
+    - |-
+      if git diff --quiet; then
+        echo "Found changes to make"
+        git checkout -b "sword-rev/$CI_PIPELINE_IID"
+        echo "BRANCH=sword-rev/$CI_PIPELINE_IID" >> update.env
+        git stage .
+        git commit -m "Automatic update #$CI_PIPELINE_IID"
+        git push "https://${GITLAB_USER_LOGIN}:${CI_GIT_TOKEN}@${CI_REPOSITORY_URL#*@}" HEAD
+      fi
+
+create_pr:
+  stage: update
+  needs:
+    - version_update
+  dependencies:
+    - version_update
+  variables:
+    GIT_STRATEGY: none
+    GITLAB_PRIVATE_TOKEN: $CI_GIT_TOKEN
+  rules:
+    - if: '$CI_PIPELINE_SOURCE == "manual"'
+  script:
+    - test -z ${DO_UPDATE} && { echo "No updates required. Not crating PR"; exit 0; }
+    - >-
+      CREATE_MR=$(gitlab project-merge-request create
+      --remove-source-branch true
+      --project-id ${CI_PROJECT_ID}
+      --source-branch "${BRANCfh}"
+      --target-branch "main"
+      --title "Update sword to r$NEW_REV")
+    - IID=${CREATE_MR#* }
+    - >-
+      gitlab project-merge-request merge \
+      --project-id ${CI_PROJECT_ID} \
+      --iid ${IID} \
+      --merge-when-pipeline-succeeds true
+    - echo "PR set to auto-merge if build succeeds"
+
 check:
   stage: check
+  rules:
+    - if: '$CI_PIPELINE_SOURCE == "manual"'
+      when: never
   tags:
     - nix
   script:
@@ -25,6 +78,9 @@ build:
       - ARCH: [x86, ucrt]
   tags:
     - nix
+  rules:
+    - if: '$CI_PIPELINE_SOURCE == "manual"'
+      when: never
   script:
     - nix run -L ".#${ARCH}"
     - ls -l
@@ -46,6 +102,8 @@ build:
   rules:
     - if: $CI_COMMIT_BRANCH == "main"
       when: always
+    - if: '$CI_PIPELINE_SOURCE == "manual"'
+      when: never
   needs:
     - job: check
       artifacts: true
diff --git a/flake.nix b/flake.nix
index cfeae1a..0ff1baf 100644
--- a/flake.nix
+++ b/flake.nix
@@ -105,6 +105,7 @@
               x86 = tar mingwW64;
               ucrt = tar ucrt64;
               ucrtAarch = tar arm.pkgsCross.ucrtAarch64;
+              update = pkgs.callPackage ./update.nix { };
             };
         };
     };
diff --git a/update.nix b/update.nix
new file mode 100644
index 0000000..cd64cdc
--- /dev/null
+++ b/update.nix
@@ -0,0 +1,37 @@
+{
+  writeShellApplication,
+  gnugrep,
+  nix-prefetch,
+  subversion,
+}:
+writeShellApplication {
+  name = "sword-updater";
+  runtimeInputs = [
+    gnugrep
+    nix-prefetch
+    subversion
+  ];
+
+  text = ''
+    url="https://www.crosswire.org/svn/sword/trunk"
+    old_rev="$(grep "${./flake.nix}" -e "rev = " | sed -E -e 's/.*"(.*)".*/\1/')"
+    echo "OLD_REV=$old_rev"
+    new_rev="$(svn info "$url" --show-item revision)"
+    echo "NEW_REV=$new_rev"
+    if [ "$new_rev" == "$old_rev" ]; then
+      #exit 0
+    else
+      echo "DO_UPDATE=1"
+    fi
+    hash="$(nix-prefetch \
+        --check-store \
+        --option extra-experimental-features flakes \
+        fetchsvn \
+        --url "$url" \
+        --rev "$new_rev" \
+    )"
+    echo "HASH=$hash"
+    sed -i flake.nix \
+        -e "s/rev = \"$old_rev\"/rev = \"$new_rev\"/"
+  '';
+}