diff --git a/Cargo.lock b/Cargo.lock
index 0cf47febc3..06d7942b59 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -297,18 +297,24 @@ dependencies = [
 
 [[package]]
 name = "numpy"
-version = "0.12.2"
+version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9fd9e8e652becf4ba6c11803945f8bf463c23f482f704bb33f70ae9d22482d10"
+checksum = "e590538dba8432d54d3587b06df73d7c044e83cfa4b200cbc7d0567f924ac0a7"
 dependencies = [
  "cfg-if 0.1.10",
  "libc",
  "ndarray",
  "num-complex",
  "num-traits",
- "pyo3",
+ "pyo3 0.15.0",
 ]
 
+[[package]]
+name = "once_cell"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "692fcb63b64b1758029e0a96ee63e049ce8c5948587f2f7208df04625e5f6b56"
+
 [[package]]
 name = "parking_lot"
 version = "0.11.1"
@@ -401,6 +407,27 @@ dependencies = [
  "unindent",
 ]
 
+[[package]]
+name = "pyo3"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64664505ce285a59b8b7e940fbe54ad65b1758a0810eddc5bc26df6f6ec8c557"
+dependencies = [
+ "cfg-if 1.0.0",
+ "libc",
+ "parking_lot",
+ "pyo3-build-config",
+]
+
+[[package]]
+name = "pyo3-build-config"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f1e4a72de84cdcd69f62211b62f62753d0c11b7b5715f3467f3754dab22a7ca"
+dependencies = [
+ "once_cell",
+]
+
 [[package]]
 name = "pyo3-derive-backend"
 version = "0.12.4"
@@ -527,7 +554,7 @@ dependencies = [
  "ndarray",
  "numpy",
  "petgraph",
- "pyo3",
+ "pyo3 0.12.4",
  "rand",
  "rand_pcg",
  "rayon",
diff --git a/Cargo.toml b/Cargo.toml
index 6fa1831bc2..c22d170b1b 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 = "0.15.0"
 rand = "0.8"
 rand_pcg = "0.3"
 rayon = "1.5"