diff --git a/tests/devshell_test.nix b/tests/devshell_test.nix
index ca1af04..a61b349 100644
--- a/tests/devshell_test.nix
+++ b/tests/devshell_test.nix
@@ -15,6 +15,7 @@
         in
           # sh
           ''
+            ${ntlib.helpers.path [pkgs.gnugrep]}
             ${ntlib.helpers.scriptHelpers}
             assert_file_contains ${shell}/env.bash "XDG_DATA_DIRS" "should contain XDG_DATA_DIRS"
           '';
@@ -43,6 +44,7 @@
         in
           # sh
           ''
+            ${ntlib.helpers.path [pkgs.gnugrep]}
             ${ntlib.helpers.scriptHelpers}
             assert_file_contains ${shell}/env.bash "HELLO" "should contain HELLO"
             assert_file_contains ${shell}/env.bash "world" "should contain world"