diff --git a/.github/workflows/hydrun.yaml b/.github/workflows/hydrun.yaml
index 33534ba..b670c09 100644
--- a/.github/workflows/hydrun.yaml
+++ b/.github/workflows/hydrun.yaml
@@ -15,7 +15,7 @@ jobs:
           - id: test
             src: .
             os: golang:1.18beta1-bullseye # 1.18 is required due to `GroupIds` requiring CGo on older versions
-            flags: "--ulimit nofile=262144:262144" # Parallel tests require a lot of open files
+            flags: "-e '--ulimit nofile=262144:262144'" # Parallel tests require a lot of open files
             cmd: ./Hydrunfile test
             dst: out/*
           - id: go