diff --git a/ports/citescoop-proto/portfile.cmake b/ports/citescoop-proto/portfile.cmake
index 7cbf2fa..58c2953 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 0.2.0
-    SHA512 eb80bfd45b19d31433071dcd2a3900c917e5e53232d73f0414cc29a9d7d9d95be855eff13dc8104d03ead9b3b26571882951eff61cce08bd240a584890c8dbeb
+    REF 0.3.0
+    SHA512 791123be5e0de49e584325fdaab1c17ee33704cde83c7a5c78ff4286e74c4c28f63dbfa069d982988953a33982fd909ebb91eb21f28b6a594755b9dc80cc3b18
     HEAD_REF main
 )
 
diff --git a/ports/citescoop-proto/vcpkg.json b/ports/citescoop-proto/vcpkg.json
index 28af1a6..119e3ec 100644
--- a/ports/citescoop-proto/vcpkg.json
+++ b/ports/citescoop-proto/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "citescoop-proto",
-  "version-semver": "0.2.0",
+  "version-semver": "0.3.0",
   "description": "Protobuf definitions used by citescoop.",
   "homepage": "https://github.com/WikiOpenCite/citescoop",
   "dependencies": [
diff --git a/versions/baseline.json b/versions/baseline.json
index ab365a1..37db09e 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -1,7 +1,7 @@
 {
   "default": {
     "citescoop-proto": {
-      "baseline": "0.2.0",
+      "baseline": "0.3.0",
       "port-version": 0
     }
   }
diff --git a/versions/c-/citescoop-proto.json b/versions/c-/citescoop-proto.json
index a724f45..125a2e8 100644
--- a/versions/c-/citescoop-proto.json
+++ b/versions/c-/citescoop-proto.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "40539be5b413f48f7dc479dd1ce5155d27a5dada",
+      "version-semver": "0.3.0",
+      "port-version": 0
+    },
     {
       "git-tree": "3a72594096f9ff11bb77eddf42e2d2c45b7e9bf9",
       "version-semver": "0.2.0",