diff --git a/Cargo.lock b/Cargo.lock
index d3672c6..67246a2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -48,7 +48,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "regex",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -63,7 +63,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rustversion",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -74,7 +74,7 @@ checksum = "dc632c540913dd051a78b00587cc47f57013d303163ddfaf4fa18717f7ccc1e0"
 dependencies = [
  "anchor-syn",
  "proc-macro2",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -86,7 +86,7 @@ dependencies = [
  "anchor-syn",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -99,7 +99,7 @@ dependencies = [
  "anyhow",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -110,10 +110,10 @@ checksum = "d104aa17418cb329ed7418b227e083d5f326a27f26ce98f5d92e33da62a5f459"
 dependencies = [
  "anchor-syn",
  "anyhow",
- "heck",
+ "heck 0.3.3",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -126,7 +126,7 @@ dependencies = [
  "anyhow",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -139,7 +139,7 @@ dependencies = [
  "anyhow",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -152,7 +152,7 @@ dependencies = [
  "anyhow",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -187,14 +187,14 @@ checksum = "03549dc2eae0b20beba6333b14520e511822a6321cdb1760f841064a69347316"
 dependencies = [
  "anyhow",
  "bs58 0.3.1",
- "heck",
+ "heck 0.3.3",
  "proc-macro2",
  "proc-macro2-diagnostics",
  "quote",
  "serde",
  "serde_json",
  "sha2",
- "syn",
+ "syn 1.0.91",
  "thiserror",
 ]
 
@@ -373,7 +373,7 @@ dependencies = [
  "borsh-schema-derive-internal",
  "proc-macro-crate 0.1.5",
  "proc-macro2",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -384,7 +384,7 @@ checksum = "5449c28a7b352f2d1e592a8a28bf139bc71afb0764a14f3c02500935d8c44065"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -395,7 +395,7 @@ checksum = "cdbd5696d8bfa21d53d9fe39a714a18538bad11492a42d066dbbc395fb1951c0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -443,7 +443,7 @@ checksum = "562e382481975bc61d11275ac5e62a19abd00b0547d99516a415336f183dcd0e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -599,7 +599,7 @@ checksum = "c9a577516173adb681466d517d39bd468293bc2c2a16439375ef0f35bba45f3d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -695,7 +695,7 @@ checksum = "aa4da3c766cd7a0db8242e326e9e4e081edd567072893ed320008189715366a4"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
  "synstructure",
 ]
 
@@ -779,6 +779,12 @@ dependencies = [
  "unicode-segmentation",
 ]
 
+[[package]]
+name = "heck"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -856,12 +862,9 @@ dependencies = [
 
 [[package]]
 name = "indoc"
-version = "1.0.4"
+version = "2.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e7906a9fababaeacb774f72410e497a1d18de916322e33797bb2cd29baa23c9e"
-dependencies = [
- "unindent",
-]
+checksum = "1e186cfbae8084e513daff4240b4797e342f988cecda4fb6c939150f96315fd8"
 
 [[package]]
 name = "instant"
@@ -1016,6 +1019,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "memoffset"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a634b1c61a95585bd15607c6ab0c4e5b226e695ff2800ba0cdccddf208c406c"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "miniz_oxide"
 version = "0.5.1"
@@ -1033,7 +1045,7 @@ checksum = "876a53fff98e03a936a674b29568b0e605f06b29372c2489ff4de23f1949743d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -1073,7 +1085,7 @@ dependencies = [
  "proc-macro-crate 1.1.3",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -1187,11 +1199,11 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.37"
+version = "1.0.70"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec757218438d5fda206afc041538b2f6d889286160d649a86a24d37e1235afd1"
+checksum = "39278fbbf5fb4f646ce651690877f89d1c5811a3d4acb27700c1cb3cdb78fd3b"
 dependencies = [
- "unicode-xid",
+ "unicode-ident",
 ]
 
 [[package]]
@@ -1202,7 +1214,7 @@ checksum = "4bf29726d67464d49fa6224a1d07936a8c08bb3fba727c7493f6cf1616fdaada"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
  "version_check",
  "yansi",
 ]
@@ -1229,13 +1241,14 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.16.4"
+version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd86513975ed69bf3fb5d4a286cdcda66dbc56f84bdf4832b6c82b459f4417b2"
+checksum = "04e8453b658fe480c3e70c8ed4e3d3ec33eb74988bd186561b0cc66b85c3bc4b"
 dependencies = [
  "cfg-if",
  "indoc",
  "libc",
+ "memoffset",
  "parking_lot 0.12.0",
  "pyo3-build-config",
  "pyo3-ffi",
@@ -1245,9 +1258,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.16.4"
+version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "450e2e56cbfa67bbe224cef93312b7a76d81c471d4e0c459d24d4bfaf3d75b53"
+checksum = "a96fe70b176a89cff78f2fa7b3c930081e163d5379b4dcdf993e3ae29ca662e5"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -1255,9 +1268,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.16.4"
+version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "36e653782972eba2fe86e8319ade54b97822c65fb1ccc1e116368372faa6ebc9"
+checksum = "214929900fd25e6604661ed9cf349727c8920d47deff196c4e28165a6ef2a96b"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -1265,25 +1278,26 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.16.4"
+version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "317ce641f29f4e10e75765630bf4d28b2008612226fcc80b27f334fee8184d0f"
+checksum = "dac53072f717aa1bfa4db832b39de8c875b7c7af4f4a6fe93cdbf9264cf8383b"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
  "quote",
- "syn",
+ "syn 2.0.39",
 ]
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.16.4"
+version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59342fce58a05983688e8d81209d06f67f0fcb1597253ef63b390b2da2417522"
+checksum = "7774b5a8282bd4f25f803b1f0d945120be959a36c72e08e7cd031c792fdfd424"
 dependencies = [
+ "heck 0.4.1",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.39",
 ]
 
 [[package]]
@@ -1309,9 +1323,9 @@ checksum = "a993555f31e5a609f617c12db6250dedcac1b0a85076912c436e6fc9b2c8e6a3"
 
 [[package]]
 name = "quote"
-version = "1.0.18"
+version = "1.0.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1feb54ed693b93a84e14094943b84b7c4eae204c512b7ccb95ab0c66d278ad1"
+checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
 dependencies = [
  "proc-macro2",
 ]
@@ -1508,7 +1522,7 @@ checksum = "08597e7152fcd306f41838ed3e37be9eaeed2b61c42e2117266a554fab4662f9"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -1588,7 +1602,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rustc_version",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -1706,7 +1720,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rustversion",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -1811,6 +1825,17 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "syn"
+version = "2.0.39"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23e78b90f2fcf45d3e842032ce32e3f2d1545ba6636271dcbf24fa306d87be7a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "synstructure"
 version = "0.12.6"
@@ -1819,7 +1844,7 @@ checksum = "f36bdaa60a83aca3921b5259d5400cbf5e90fc51931376a9bd4a0eb79aa7210f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
  "unicode-xid",
 ]
 
@@ -1869,7 +1894,7 @@ checksum = "f8b463991b4eab2d801e724172285ec4195c650e8ec79b149e6c2a8e6dd3f783"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
 ]
 
 [[package]]
@@ -1909,6 +1934,12 @@ dependencies = [
  "static_assertions",
 ]
 
+[[package]]
+name = "unicode-ident"
+version = "1.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
+
 [[package]]
 name = "unicode-segmentation"
 version = "1.9.0"
@@ -1923,9 +1954,9 @@ checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 
 [[package]]
 name = "unindent"
-version = "0.1.8"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "514672a55d7380da379785a4d70ca8386c8883ff7eaae877be4d2081cebe73d8"
+checksum = "c7de7d73e1754487cb58364ee906a499937a0dfabd86bcb980fa99ec8c8fa2ce"
 
 [[package]]
 name = "uriparse"
@@ -1985,7 +2016,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
  "wasm-bindgen-shared",
 ]
 
@@ -2007,7 +2038,7 @@ checksum = "5be8e654bdd9b79216c2929ab90721aa82faf65c48cdf08bdc4e7f51357b80da"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -2125,6 +2156,6 @@ checksum = "3f8f187641dad4f680d25c4bfc4225b418165984179f26ca76ec4fb6441d3a17"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.91",
  "synstructure",
 ]
diff --git a/stable-swap-math/sim/Cargo.toml b/stable-swap-math/sim/Cargo.toml
index 0091e83..5b92476 100644
--- a/stable-swap-math/sim/Cargo.toml
+++ b/stable-swap-math/sim/Cargo.toml
@@ -13,4 +13,4 @@ keywords = ["solana", "saber", "curve", "sim"]
 name = "sim"
 
 [dependencies]
-pyo3 = { version = "^0.16.4", features = ["auto-initialize"] }
+pyo3 = { version = "^0.20.0", features = ["auto-initialize"] }