diff --git a/samples/float_model/CMakeLists.txt b/samples/float_model/CMakeLists.txt
index d14eb97..216fd9e 100644
--- a/samples/float_model/CMakeLists.txt
+++ b/samples/float_model/CMakeLists.txt
@@ -81,7 +81,7 @@
     ::mobilenet_input_c
     samples::util::util
   LINKOPTS
-    "LINKER:--defsym=__stack_size__=100k"
+    "LINKER:--defsym=__stack_size__=150k"
 )
 
 iree_cc_binary(
diff --git a/samples/simple_vec_mul/CMakeLists.txt b/samples/simple_vec_mul/CMakeLists.txt
index f545988..32195b9 100644
--- a/samples/simple_vec_mul/CMakeLists.txt
+++ b/samples/simple_vec_mul/CMakeLists.txt
@@ -54,6 +54,8 @@
   DEPS
     ::simple_float_mul_bytecode_module_dylib_c
     samples::util::util
+  LINKOPTS
+    "LINKER:--defsym=__stack_size__=20k"
 )
 
 iree_cc_binary(
@@ -64,6 +66,8 @@
   DEPS
     ::simple_float_mul_c_module_static_c
     samples::util::util_emitc
+  LINKOPTS
+    "LINKER:--defsym=__stack_size__=20k"
   COPTS
     "-DBUILD_EMITC_STATIC"
 )
@@ -76,6 +80,8 @@
   DEPS
     ::simple_int_mul_bytecode_module_dylib_c
     samples::util::util
+  LINKOPTS
+    "LINKER:--defsym=__stack_size__=20k"
 )
 
 iree_cc_binary(
@@ -86,6 +92,8 @@
   DEPS
     ::simple_int_mul_c_module_static_c
     samples::util::util_emitc
+  LINKOPTS
+    "LINKER:--defsym=__stack_size__=20k"
   COPTS
     "-DBUILD_EMITC_STATIC"
 )