Index: .github/workflows/build.yml
===================================================================
diff -u -r2a01cc6febba9425860954032c0d7ce6e21d1a94 -r96f4eb32ae0c031f6dc95644cfe8360f6871140c
--- .github/workflows/build.yml	(.../build.yml)	(revision 2a01cc6febba9425860954032c0d7ce6e21d1a94)
+++ .github/workflows/build.yml	(.../build.yml)	(revision 96f4eb32ae0c031f6dc95644cfe8360f6871140c)
@@ -51,31 +51,31 @@
             experimental: [false]
           - os: macos-latest
             compiler: gcc-10
-            tcltag: core-8-6-11
+            tcltag: core-8-6-12
             experimental: [false]
           - os: macos-latest
             compiler: gcc-10
             tcltag: core-8-7-a3
             experimental: [false]
           - os: macos-latest
             compiler: gcc-10
-            tcltag: core-8-7-a5-rc
+            tcltag: core-8-7-a5
             experimental: [false]
           - os: ubuntu-latest
             compiler: gcc-10
             tcltag: core-8-5-19
             experimental: [false]
           - os: ubuntu-latest
             compiler: gcc-10
-            tcltag: core-8-6-11
+            tcltag: core-8-6-12
             experimental: [false]
           - os: ubuntu-latest
             compiler: gcc-10
             tcltag: core-8-7-a3
             experimental: [false]
           - os: ubuntu-latest
             compiler: gcc-10
-            tcltag: core-8-7-a5-rc
+            tcltag: core-8-7-a5
             experimental: [false]
     defaults:
       run: