diff --git a/ports/astr/portfile.cmake b/ports/astr/portfile.cmake
index bd521743ca..ec88eaaa51 100644
--- a/ports/astr/portfile.cmake
+++ b/ports/astr/portfile.cmake
@@ -1,8 +1,8 @@
 vcpkg_from_github(
   OUT_SOURCE_PATH SOURCE_PATH
   REPO a4z/astr
-  REF "${VERSION}"
-  SHA512 528f851821e3bd0719881ed237b1720529a7c9141005214b1963565f164d1a6ec89adb1ea8efee0fa818ba9d8961afb4c7adfc91aca6308799d1ecbd8a9f2ab2
+  REF "v${VERSION}"
+  SHA512 795f63ceb98959e19285edbb0480a8c5ea8ba3e9129c44738289b53c05a13356e9971263cfbcd89405a4fed6127998a70a0119989d7bcf3c8c69b5503cf6e90f
   HEAD_REF main
 )
 
diff --git a/ports/astr/vcpkg.json b/ports/astr/vcpkg.json
index 8f21727a07..9aedf73de4 100644
--- a/ports/astr/vcpkg.json
+++ b/ports/astr/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "astr",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "description": "Compile-time array string header-only library.",
   "homepage": "https://github.com/a4z/astr",
   "license": "MPL-2.0",
diff --git a/versions/a-/astr.json b/versions/a-/astr.json
index a636377fc1..a7dc3218ea 100644
--- a/versions/a-/astr.json
+++ b/versions/a-/astr.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "03a4d5df0219be2719928335f500e520da77e453",
+      "version": "0.3.1",
+      "port-version": 0
+    },
     {
       "git-tree": "b078ac6518cedf2a9a7ddc711f68008fc1ced988",
       "version": "0.3.0",
diff --git a/versions/baseline.json b/versions/baseline.json
index 93419af089..a4d1cc6842 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -341,7 +341,7 @@
       "port-version": 0
     },
     "astr": {
-      "baseline": "0.3.0",
+      "baseline": "0.3.1",
       "port-version": 0
     },
     "async-mqtt": {