diff --git a/Cargo.lock b/Cargo.lock
index 0cf47febc3..ac94e19d53 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "ahash"
 version = "0.4.7"
@@ -12,12 +14,6 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
 
-[[package]]
-name = "cfg-if"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
-
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -36,7 +32,7 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dca26ee1f8d361640700bde38b2c37d8c22b3ce2d360e1fc1c74ea4b0aa7d775"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "crossbeam-utils",
 ]
 
@@ -46,7 +42,7 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "94af6efb46fef72616855b036a624cf27ba656ffc9be1b9a3c931cfc7749a9a9"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "crossbeam-epoch",
  "crossbeam-utils",
 ]
@@ -57,7 +53,7 @@ version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a1aaa739f95311c2c7887a76863f500026092fb1dce0161dab577e559ef3569d"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "const_fn",
  "crossbeam-utils",
  "lazy_static",
@@ -72,7 +68,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "02d96d1e189ef58269ebe5b97953da3274d83a93af647c2ddd6f9dab28cedb8d"
 dependencies = [
  "autocfg",
- "cfg-if 1.0.0",
+ "cfg-if",
  "lazy_static",
 ]
 
@@ -104,7 +100,7 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "libc",
  "wasi",
 ]
@@ -178,7 +174,7 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "61124eeebbd69b8190558df225adf7e4caafce0d743919e5d6b19652314ec5ec"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
 ]
 
 [[package]]
@@ -297,18 +293,23 @@ dependencies = [
 
 [[package]]
 name = "numpy"
-version = "0.12.2"
+version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9fd9e8e652becf4ba6c11803945f8bf463c23f482f704bb33f70ae9d22482d10"
+checksum = "9e051c9e722a66c2e619b2a30f731e80b75f172d98ae3518b61b08a1d3d850a3"
 dependencies = [
- "cfg-if 0.1.10",
  "libc",
  "ndarray",
  "num-complex",
  "num-traits",
- "pyo3",
+ "pyo3 0.16.0",
 ]
 
+[[package]]
+name = "once_cell"
+version = "1.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87f3e037eac156d1775da914196f0f37741a274155e34a0b7e427c35d2a2ecb9"
+
 [[package]]
 name = "parking_lot"
 version = "0.11.1"
@@ -326,7 +327,7 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ccb628cad4f84851442432c60ad8e1f607e29752d0bf072cbd0baf28aa34272"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "instant",
  "libc",
  "redox_syscall",
@@ -401,6 +402,28 @@ dependencies = [
  "unindent",
 ]
 
+[[package]]
+name = "pyo3"
+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d1a3df45cb95bd954fac00bd9609062640fd7fb9e9946a660092c9e015421fb"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "parking_lot",
+ "pyo3-build-config",
+ "pyo3-ffi",
+]
+
+[[package]]
+name = "pyo3-build-config"
+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "386a68f0f5f2f9932815068bc8049a56989f2437d96dbb31d1fb11b63ce90364"
+dependencies = [
+ "once_cell",
+]
+
 [[package]]
 name = "pyo3-derive-backend"
 version = "0.12.4"
@@ -412,6 +435,16 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "pyo3-ffi"
+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9a4e2f74dc77eea5ce11d19f0afaeb632b6590f8cbb1d5ee2f1330b766803e8"
+dependencies = [
+ "libc",
+ "pyo3-build-config",
+]
+
 [[package]]
 name = "pyo3cls"
 version = "0.12.4"
@@ -527,7 +560,7 @@ dependencies = [
  "ndarray",
  "numpy",
  "petgraph",
- "pyo3",
+ "pyo3 0.12.4",
  "rand",
  "rand_pcg",
  "rayon",
diff --git a/Cargo.toml b/Cargo.toml
index 6fa1831bc2..9f79f19246 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ crate-type = ["cdylib"]
 [dependencies]
 petgraph = "0.5.1"
 fixedbitset = "0.2.0"
-numpy = "0.12.1"
+numpy = "0.16.0"
 rand = "0.8"
 rand_pcg = "0.3"
 rayon = "1.5"