diff --git a/README.md b/README.md
index 3f4184c..ba104ee 100644
--- a/README.md
+++ b/README.md
@@ -31,26 +31,26 @@ cargo run --release -- examples/c/fibonacci.c  # compile with release build
 ## Test
 
 ```sh
-RUST_MIN_STACK=8388608 cargo test             # debug build test
-RUST_MIN_STACK=8388608 cargo test --release   # release build test
+RUST_MIN_STACK=33554432 cargo test             # debug build test
+RUST_MIN_STACK=33554432 cargo test --release   # release build test
 
-RUST_MIN_STACK=8388608 cargo test test_examples_write_c       # run write_c test
+RUST_MIN_STACK=33554432 cargo test test_examples_write_c       # run write_c test
 
-RUST_MIN_STACK=8388608 cargo test test_examples_irgen_small   # run irgen test using a small subset of examples
-RUST_MIN_STACK=8388608 cargo test test_examples_irgen         # run irgen test
+RUST_MIN_STACK=33554432 cargo test test_examples_irgen_small   # run irgen test using a small subset of examples
+RUST_MIN_STACK=33554432 cargo test test_examples_irgen         # run irgen test
 
-RUST_MIN_STACK=8388608 cargo test test_examples_simplify_cfg  # run simplify_cfg test
-RUST_MIN_STACK=8388608 cargo test test_examples_mem2reg       # run mem2reg test
-RUST_MIN_STACK=8388608 cargo test test_examples_deadcode      # run deadcode test
-RUST_MIN_STACK=8388608 cargo test test_examples_gvn           # run gvn test
+RUST_MIN_STACK=33554432 cargo test test_examples_simplify_cfg  # run simplify_cfg test
+RUST_MIN_STACK=33554432 cargo test test_examples_mem2reg       # run mem2reg test
+RUST_MIN_STACK=33554432 cargo test test_examples_deadcode      # run deadcode test
+RUST_MIN_STACK=33554432 cargo test test_examples_gvn           # run gvn test
 
-RUST_MIN_STACK=8388608 cargo test test_examples_asmgen_small  # run asmgen test using a small subset of examples
-RUST_MIN_STACK=8388608 cargo test test_examples_asmgen        # run asmgen test
+RUST_MIN_STACK=33554432 cargo test test_examples_asmgen_small  # run asmgen test using a small subset of examples
+RUST_MIN_STACK=33554432 cargo test test_examples_asmgen        # run asmgen test
 
-RUST_MIN_STACK=8388608 cargo test test_examples_end_to_end    # run irgen, optimize and asmgen pipeline test
+RUST_MIN_STACK=33554432 cargo test test_examples_end_to_end    # run irgen, optimize and asmgen pipeline test
 ```
 
-`RUST_MIN_STACK=8388608` is necessary for deep call stack for irgen tests.
+`RUST_MIN_STACK=33554432` is necessary for deep call stack for irgen tests.
 
 
 ## Fuzzing