diff --git a/README.md b/README.md
index 9b6159a..6984470 100644
--- a/README.md
+++ b/README.md
@@ -9,16 +9,10 @@ vcpkg registry for WikiOpenCite packages
 
 ## Updating / adding ports
 
-Fetch the tar.gz of the latest release from
+Get the sha512
 
 ```
-http://github.com/<org>/<repo>/archive/<tag>.tar.gz
-```
-
-Calculate the SHA512 and add it to the relevant cmake file.
-
-```
-sha512sum <repo>-<tag>.tar.gz
+./get_sha512.sh <repo> <version>
 ```
 
 Format the config file.
diff --git a/get_sha512.sh b/get_sha512.sh
new file mode 100755
index 0000000..86b0760
--- /dev/null
+++ b/get_sha512.sh
@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+# SPDX-FileCopyrightText: 2025 The University of St Andrews
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# Arguments:
+#   $1 = repository in the form "OWNER/REPO"
+#   $2 = version tag (e.g. "0.5.0")
+
+set -euo pipefail
+
+REPO="$1"
+VERSION="$2"
+
+curl -sSL "https://github.com/WikiOpenCite/${REPO}/archive/${VERSION}.tar.gz" -o - \
+  | sha512sum | awk '{print $1}'
diff --git a/ports/citescoop-proto/portfile.cmake b/ports/citescoop-proto/portfile.cmake
index 60551d9..c6fc963 100644
--- a/ports/citescoop-proto/portfile.cmake
+++ b/ports/citescoop-proto/portfile.cmake
@@ -1,8 +1,8 @@
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO WikiOpenCite/proto
-    REF 0.4.1
-    SHA512 b5a715729ecb9152f6918e70b07a12cdb7d200a1a0cf469160445c21b71704624350284e1b18ba8b4393e45a9992eb76517cac3e4baf1bd42850ec54815ebeb0
+    REF 0.5.0
+    SHA512 11b3667a00bd4d41814a167a1a92119805302a840654f44e5c322d4c9f89484fadebe9451767da302cfcb3f34a4d5cf1e4517eb19f3abf3f79a786c00f16fd2b
     HEAD_REF main
 )
 
diff --git a/ports/citescoop-proto/vcpkg.json b/ports/citescoop-proto/vcpkg.json
index b8f23be..7d8b9b6 100644
--- a/ports/citescoop-proto/vcpkg.json
+++ b/ports/citescoop-proto/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "citescoop-proto",
-  "version-semver": "0.4.1",
+  "version-semver": "0.5.0",
   "description": "Protobuf definitions used by citescoop.",
   "homepage": "https://github.com/WikiOpenCite/citescoop",
   "dependencies": [
diff --git a/versions/baseline.json b/versions/baseline.json
index 4fcd716..e0b0fbf 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -5,7 +5,7 @@
       "port-version": 0
     },
     "citescoop-proto": {
-      "baseline": "0.4.1",
+      "baseline": "0.5.0",
       "port-version": 0
     }
   }
diff --git a/versions/c-/citescoop-proto.json b/versions/c-/citescoop-proto.json
index 37a3905..b0217d4 100644
--- a/versions/c-/citescoop-proto.json
+++ b/versions/c-/citescoop-proto.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "057b485cf9f3f1be6a730ebf4296675342961ee2",
+      "version-semver": "0.5.0",
+      "port-version": 0
+    },
     {
       "git-tree": "1fbf465c96e62e2dc8048edc22c1c3ab2788beca",
       "version-semver": "0.4.1",