diff --git a/Cargo.lock b/Cargo.lock
index 3140982..3af48a9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1458,7 +1458,7 @@ version = "0.70.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f49d8fed880d473ea71efb9bf597651e77201bdd4893efe54c9e5d65ae04ce6f"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "cexpr",
  "clang-sys",
  "itertools 0.13.0",
@@ -1478,7 +1478,7 @@ version = "0.71.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5f58bf3d7db68cfbac37cfc485a8d711e87e064c3d0fe0435b92f7a407f9d6b3"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "cexpr",
  "clang-sys",
  "itertools 0.13.0",
@@ -1496,7 +1496,7 @@ version = "0.72.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "993776b509cfb49c750f11b8f07a46fa23e0a1386ffc01fb1e7d343efc387895"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "cexpr",
  "clang-sys",
  "itertools 0.13.0",
@@ -1547,9 +1547,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bitflags"
-version = "2.12.0"
+version = "2.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c61cd05405eb1d0f3a4660f802bad76ece84b6e722426342ba5dd511f724e97"
+checksum = "c4512299f36f043ab09a583e57bceb5a5aab7a73db1805848e8fef3c9e8c78b3"
 dependencies = [
  "serde_core",
 ]
@@ -2292,7 +2292,7 @@ version = "0.28.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "829d955a0bb380ef178a640b91779e3987da38c9aea133b20614cfed8cdea9c6"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "crossterm_winapi",
  "mio",
  "parking_lot 0.12.5",
@@ -2308,7 +2308,7 @@ version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d8b9f2e4c67f833b660cdb0a3523065869fb35570177239812ed4c905aeff87b"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "crossterm_winapi",
  "derive_more 2.1.1",
  "document-features",
@@ -2843,7 +2843,7 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e0e367e4e7da84520dedcac1901e4da967309406d1e51017ae1abfb97adbd38"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "block2",
  "libc",
  "objc2",
@@ -4427,7 +4427,7 @@ version = "0.20.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7b88256088d75a56f8ecfa070513a775dd9107f6530ef14919dac831af9cfe2b"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "libc",
  "libgit2-sys",
  "log",
@@ -4459,7 +4459,7 @@ version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0bf760ebf69878d9fd8f110c89703d90ce35095324d1f1edcb595c63945ee757"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "ignore",
  "walkdir",
 ]
@@ -5554,7 +5554,7 @@ dependencies = [
  "anyhow",
  "arrayref",
  "arrayvec",
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "derive_more 1.0.0",
  "impls",
  "indexmap 2.14.0",
@@ -5990,7 +5990,7 @@ version = "0.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "22f9786d56d972959e1408b6a93be6af13b9c1392036c5c1fafa08a1b0c6ee87"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "byteorder",
  "derive_builder",
  "getset",
@@ -6028,7 +6028,7 @@ version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "71e2746dc3a24dd78b3cfcb7be93368c6de9963d30f43a6a73998a9cf4b17b46"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "cfg-if",
  "cfg_aliases",
  "libc",
@@ -6040,7 +6040,7 @@ version = "0.30.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "74523f3a35e05aba87a1d978330aef40f67b0304ac79c1c00b294c9830543db6"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "cfg-if",
  "cfg_aliases",
  "libc",
@@ -6052,7 +6052,7 @@ version = "0.31.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf20d2fde8ff38632c426f1165ed7436270b44f199fc55284c38276f9db47c3d"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "cfg-if",
  "cfg_aliases",
  "libc",
@@ -6338,7 +6338,7 @@ version = "0.10.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a45fa2aa886c42762255da344f0a0d313e254066c46aad76f300c3d3da62d967"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "cfg-if",
  "foreign-types",
  "libc",
@@ -7282,7 +7282,7 @@ version = "0.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cc5b72d8145275d844d4b5f6d4e1eef00c8cd889edb6035c21675d1bb1f45c9f"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "hex",
  "procfs-core",
  "rustix 0.38.44",
@@ -7294,7 +7294,7 @@ version = "0.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "239df02d8349b06fc07398a3a1697b06418223b1c7725085e801e7c0fc6a12ec"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "hex",
 ]
 
@@ -7323,7 +7323,7 @@ checksum = "4b45fcc2344c680f5025fe57779faef368840d0bd1f42f216291f0dc4ace4744"
 dependencies = [
  "bit-set",
  "bit-vec",
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "num-traits",
  "rand 0.9.4",
  "rand_chacha 0.9.0",
@@ -7603,7 +7603,7 @@ version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eabd94c2f37801c20583fc49dd5cd6b0ba68c716787c2dd6ed18571e1e63117b"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "cassowary",
  "compact_str",
  "crossterm 0.28.1",
@@ -7662,7 +7662,7 @@ version = "0.5.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ed2bf2547551a7053d6fdfafda3f938979645c44812fbfcda098faae3f1a362d"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
 ]
 
 [[package]]
@@ -8040,7 +8040,7 @@ version = "7.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1f64fbacb86008394aaebd3454f9643b7d5a782bd251135e17c5b33da592d84d"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "revm-bytecode",
  "revm-primitives",
  "serde",
@@ -8253,7 +8253,7 @@ version = "0.38.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fdb5bc1ae2baa591800df16c9ca78619bf65c0488b41b96ccec5d11220d8c154"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "errno",
  "libc",
  "linux-raw-sys 0.4.15",
@@ -8266,7 +8266,7 @@ version = "1.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6fe4565b9518b83ef4f91bb47ce29620ca828bd32cb7e408f0062e9930ba190"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "errno",
  "libc",
  "linux-raw-sys 0.12.1",
@@ -8383,7 +8383,7 @@ version = "15.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2ee1e066dc922e513bda599c6ccb5f3bb2b0ea5870a579448f2622993f0a9a2f"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "cfg-if",
  "clipboard-win",
  "fd-lock",
@@ -8607,7 +8607,7 @@ version = "3.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b7f4bc775c73d9a02cde8bf7b2ec4c9d12743edf609006c7facc23998404cd1d"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "core-foundation 0.10.1",
  "core-foundation-sys",
  "libc",
@@ -9874,7 +9874,7 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a13f3d0daba03132c0aa9767f98351b3488edc2c100cda2d2ec2b04f3d8d3c8b"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "core-foundation 0.9.4",
  "system-configuration-sys",
 ]
@@ -10394,7 +10394,7 @@ version = "0.6.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4cfcf7e2740e6fc6d4d688b4ef00650406bb94adf4731e43c096c3a19fe40840"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "bytes",
  "futures-util",
  "http",
@@ -10985,7 +10985,7 @@ version = "0.244.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "47b807c72e1bac69382b3a6fb3dbe8ea4c0ed87ff5629b8685ae6b9a611028fe"
 dependencies = [
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "hashbrown 0.15.5",
  "indexmap 2.14.0",
  "semver 1.0.28",
@@ -11495,7 +11495,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9d66ea20e9553b30172b5e831994e35fbde2d165325bec84fc43dbf6f4eb9cb2"
 dependencies = [
  "anyhow",
- "bitflags 2.12.0",
+ "bitflags 2.11.1",
  "indexmap 2.14.0",
  "log",
  "serde",
diff --git a/ef_tests/engine/.fixtures_url_amsterdam b/ef_tests/engine/.fixtures_url_amsterdam
index 78577b4..566881c 100644
--- a/ef_tests/engine/.fixtures_url_amsterdam
+++ b/ef_tests/engine/.fixtures_url_amsterdam
@@ -1 +1 @@
-https://github.com/ethereum/execution-spec-tests/releases/download/snobal-devnet-6%40v1.1.0/fixtures_snobal-devnet-6.tar.gz
+https://github.com/ethereum/execution-specs/releases/download/tests-bal%40v7.2.0/fixtures_bal.tar.gz