diff --git a/.cirrus.yml b/.cirrus.yml
index 01369b0ee29..aa87cc3e302 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -243,8 +243,8 @@ task:
   name: '[TSan, depends, gui] [lunar]'
   << : *GLOBAL_TASK_TEMPLATE
   container:
-    cpu: 6  # Increase CPU and Memory to avoid timeout
-    memory: 24G
+    cpu: 4
+    memory: 16G  # The default memory is too small, so double everything
     docker_arguments:
       CI_IMAGE_NAME_TAG: ubuntu:lunar
       FILE_ENV: "./ci/test/00_setup_env_native_tsan.sh"
@@ -298,7 +298,7 @@ task:
   << : *GLOBAL_TASK_TEMPLATE
   container:
     cpu: 4
-    memory: 16G  # The default memory is sometimes just a bit too small, so double everything
+    memory: 16G  # The default memory is too small, so double everything
     docker_arguments:
       CI_IMAGE_NAME_TAG: ubuntu:focal
       FILE_ENV: "./ci/test/00_setup_env_i686_multiprocess.sh"