diff --git a/tests/checks/tmux-complete.fish b/tests/checks/tmux-complete.fish
index 8b8076109..45088def6 100644
--- a/tests/checks/tmux-complete.fish
+++ b/tests/checks/tmux-complete.fish
@@ -1,6 +1,8 @@
 #RUN: %fish %s
 #REQUIRES: command -v tmux
 #REQUIRES: uname -r | grep -qv Microsoft
+# disable on github actions because it's flakey
+#REQUIRES: test -z "$CI"
 
 isolated-tmux-start
 
diff --git a/tests/pexpects/eval-stack-overflow.py b/tests/pexpects/eval-stack-overflow.py
index 746da52af..da7fc832e 100644
--- a/tests/pexpects/eval-stack-overflow.py
+++ b/tests/pexpects/eval-stack-overflow.py
@@ -19,6 +19,7 @@ expect_prompt()
 sendline("echo cat dog")
 expect_prompt("cat dog")
 
+sleep(0.5)
 sendline("eval (string replace dog tiger -- $history[1])")
 expect_prompt("cat tiger")