diff --git a/workflow/rules/0_common.smk b/workflow/rules/0_common.smk
index dfeb7ac..c64ff4e 100644
--- a/workflow/rules/0_common.smk
+++ b/workflow/rules/0_common.smk
@@ -23,7 +23,7 @@ def make_target_configs(config):
 
 
 def mem_mb_for_samples(wildcards) -> int:
-    bytes_per_double = 8
+    bytes_per_double = 64
     num_chains = config["sample"]["chains"]
     num_iters = config["sample"]["iter_sampling"]
     target_config = f"{wildcards.target}/{wildcards.target_config}"
diff --git a/workflow/rules/2_compute_target_expectations.smk b/workflow/rules/2_compute_target_expectations.smk
index 5a13fff..2bb86e2 100644
--- a/workflow/rules/2_compute_target_expectations.smk
+++ b/workflow/rules/2_compute_target_expectations.smk
@@ -1,5 +1,5 @@
 def mem_mb_for_target_expectations(wildcards) -> int:
-    bytes_per_double = 8
+    bytes_per_double = 64
     scale_factor = 10
     batch_size = 1_000_000
     N = target_configs[wildcards.target_config][1]["N"]