diff --git a/.github/workflows/xfstests-9p.yml b/.github/workflows/xfstests-9p.yml
index efcf38a3..c6c95623 100644
--- a/.github/workflows/xfstests-9p.yml
+++ b/.github/workflows/xfstests-9p.yml
@@ -105,7 +105,7 @@ jobs:
           [cache]
           dir = "/tmp/zerofs-cache-scratch"
           disk_size_gb = 1.0
-          memory_size_gb = 1.0
+          memory_size_gb = 0.1
 
           [storage]
           url = "file://${{ github.workspace }}/zerofs-scratch-data"
diff --git a/.github/workflows/xfstests-nfs.yml b/.github/workflows/xfstests-nfs.yml
index 9e3afed1..d7597856 100644
--- a/.github/workflows/xfstests-nfs.yml
+++ b/.github/workflows/xfstests-nfs.yml
@@ -61,7 +61,7 @@ jobs:
           [cache]
           dir = "/tmp/zerofs-cache-test"
           disk_size_gb = 1.0
-          memory_size_gb = 1.0
+          memory_size_gb = 0.1
 
           [storage]
           url = "file://${{ github.workspace }}/zerofs-test-data"