diff --git a/.github/workflows/linux-520-32bit.yml b/.github/workflows/linux-520-32bit.yml
index 32d7acb0..fb03affe 100644
--- a/.github/workflows/linux-520-32bit.yml
+++ b/.github/workflows/linux-520-32bit.yml
@@ -11,5 +11,5 @@ jobs:
     with:
       compiler: 'ocaml-variants.5.2.0+options,ocaml-option-32bit'
       dune_profile: 'debug-runtime'
-      runparam: 's=2048,v=0,V=1'
+      runparam: 's=4096,v=0,V=1'
       timeout: 240
diff --git a/.github/workflows/linux-530-trunk-32bit.yml b/.github/workflows/linux-530-trunk-32bit.yml
index b0ae4ce6..84c9ca22 100644
--- a/.github/workflows/linux-530-trunk-32bit.yml
+++ b/.github/workflows/linux-530-trunk-32bit.yml
@@ -12,5 +12,5 @@ jobs:
       compiler: 'ocaml-variants.5.3.0+trunk,ocaml-option-32bit'
       compiler_git_ref: refs/heads/trunk
       dune_profile: 'debug-runtime'
-      runparam: 's=2048,v=0,V=1'
+      runparam: 's=4096,v=0,V=1'
       timeout: 240