diff --git a/tests/wrapper.py b/tests/wrapper.py
index 89fb319..c7e4115 100644
--- a/tests/wrapper.py
+++ b/tests/wrapper.py
@@ -115,7 +115,7 @@ def make_target(self, target, stream=True, asynchronous=False, **kwargs):
         cmd = (
             f"{self.exe} -c '{self.pp} && "
             + f"{self.snakemake} -s {self.snakefile} "
-            + f"{options} --nolock "
+            + f"{options} --nolock --default-resources mem_mb=100 "
             + f"-j {self._num_cores} {self.workdir} {force} {target} {prof} {jn}'"
         )