diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 50f85b5..86515b8 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -7,6 +7,9 @@ on:
     branches:
       - master
   workflow_dispatch:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 env:
   DIST: executables
   GCC_V: 12
@@ -18,7 +21,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, macos-14, windows-2022]
+        os: [ubuntu-22.04, macos-15, windows-2022]
     defaults:
       run:
         shell: bash
diff --git a/releases.json b/releases.json
index 53b11b2..0fb8c64 100644
--- a/releases.json
+++ b/releases.json
@@ -1,11 +1,11 @@
 [
   {
     "repo": "MODFLOW-ORG/modflow6",
-    "tag": "6.7.0",
+    "tag": "6.8.2",
     "assets": {
-      "linux": "mf6.7.0_linux.zip",
-      "macarm": "mf6.7.0_macarm.zip",
-      "win64": "mf6.7.0_win64.zip"
+      "linux": "mf6.8.2_linux.zip",
+      "macarm": "mf6.8.2_macarm.zip",
+      "win64": "mf6.8.2_win64.zip"
     },
     "programs": {
       "mf6": "mf6",
@@ -28,7 +28,7 @@
   },
   {
     "repo": "MODFLOW-ORG/gridgen",
-    "tag": "v1.0.02",
+    "tag": "v1.0.03",
     "assets": {
       "linux": "linux.zip",
       "macarm": "macarm.zip",