diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1ba9f91dc..c538eb872 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -92,7 +92,7 @@ env:
     ruby
     rubygem-asciidoctor
     sudo
-    tcl87
+    tcl86
     zstd
 
 jobs: