diff --git a/Formula/s/speedtest-cli.rb b/Formula/s/speedtest-cli.rb
index ea5567ac8017..e297994ec796 100644
--- a/Formula/s/speedtest-cli.rb
+++ b/Formula/s/speedtest-cli.rb
@@ -16,6 +16,10 @@ class SpeedtestCli < Formula
     sha256 cellar: :any_skip_relocation, all: "93487be757c9b3763deeb1b1415ee8ad10c5a80fcc9ebaeacbb8fbac3e9b9474"
   end
 
+  # see issue in https://github.com/sivel/speedtest-cli/pull/796
+  deprecate! date: "2026-01-18", because: :unmaintained
+  disable! date: "2027-01-18", because: :unmaintained
+
   depends_on "python@3.14"
 
   # Support Python 3.10, remove on next release