diff --git a/Cargo.lock b/Cargo.lock
index 26217652..a6af322d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -183,9 +183,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "3.1.2"
+version = "3.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5177fac1ab67102d8989464efd043c6ff44191b1557ec1ddd489b4f7e1447e77"
+checksum = "ced1892c55c910c1219e98d6fc8d71f6bddba7905866ce740066d8bfea859312"
 dependencies = [
  "atty",
  "bitflags",
@@ -195,14 +195,14 @@ dependencies = [
  "os_str_bytes",
  "strsim 0.10.0",
  "termcolor",
- "textwrap 0.14.2",
+ "textwrap 0.15.0",
 ]
 
 [[package]]
 name = "clap_derive"
-version = "3.1.2"
+version = "3.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01d42c94ce7c2252681b5fed4d3627cc807b13dfc033246bd05d5b252399000e"
+checksum = "da95d038ede1a964ce99f49cbe27a7fb538d1da595e4b4f70b8c8f338d17bf16"
 dependencies = [
  "heck",
  "proc-macro-error",
@@ -527,24 +527,10 @@ dependencies = [
 
 [[package]]
 name = "indoc"
-version = "0.3.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47741a8bc60fb26eb8d6e0238bbb26d8575ff623fdc97b1a2c00c050b9684ed8"
-dependencies = [
- "indoc-impl",
- "proc-macro-hack",
-]
-
-[[package]]
-name = "indoc-impl"
-version = "0.3.6"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce046d161f000fffde5f432a0d034d0341dc152643b2598ed5bfce44c4f3a8f0"
+checksum = "e7906a9fababaeacb774f72410e497a1d18de916322e33797bb2cd29baa23c9e"
 dependencies = [
- "proc-macro-hack",
- "proc-macro2",
- "quote",
- "syn",
  "unindent",
 ]
 
@@ -754,9 +740,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.9.0"
+version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da32515d9f6e6e489d7bc9d84c71b060db7247dc035bbe44eac88cf87486d8d5"
+checksum = "87f3e037eac156d1775da914196f0f37741a274155e34a0b7e427c35d2a2ecb9"
 
 [[package]]
 name = "oorandom"
@@ -841,7 +827,7 @@ dependencies = [
 name = "oxigraph_server"
 version = "0.3.0-beta.4"
 dependencies = [
- "clap 3.1.2",
+ "clap 3.1.5",
  "flate2",
  "oxhttp",
  "oxigraph",
@@ -856,7 +842,7 @@ name = "oxigraph_testsuite"
 version = "0.3.0-beta.4"
 dependencies = [
  "anyhow",
- "clap 3.1.2",
+ "clap 3.1.5",
  "criterion",
  "oxigraph",
  "text-diff",
@@ -919,25 +905,6 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
-[[package]]
-name = "paste"
-version = "0.1.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "45ca20c77d80be666aef2b45486da86238fabe33e38306bd3118fe4af33fa880"
-dependencies = [
- "paste-impl",
- "proc-macro-hack",
-]
-
-[[package]]
-name = "paste-impl"
-version = "0.1.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d95a7db200b97ef370c8e6de0088252f7e0dfff7d047a28528e47456c0fc98b6"
-dependencies = [
- "proc-macro-hack",
-]
-
 [[package]]
 name = "peeking_take_while"
 version = "0.1.2"
@@ -1035,12 +1002,6 @@ dependencies = [
  "version_check",
 ]
 
-[[package]]
-name = "proc-macro-hack"
-version = "0.5.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
-
 [[package]]
 name = "proc-macro2"
 version = "1.0.36"
@@ -1052,35 +1013,46 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.15.1"
+version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7cf01dbf1c05af0a14c7779ed6f3aa9deac9c3419606ac9de537a2d649005720"
+checksum = "9d1a3df45cb95bd954fac00bd9609062640fd7fb9e9946a660092c9e015421fb"
 dependencies = [
  "cfg-if",
  "indoc",
  "libc",
  "parking_lot",
- "paste",
  "pyo3-build-config",
+ "pyo3-ffi",
  "pyo3-macros",
  "unindent",
 ]
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.15.1"
+version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dbf9e4d128bfbddc898ad3409900080d8d5095c379632fbbfbb9c8cfb1fb852b"
+checksum = "386a68f0f5f2f9932815068bc8049a56989f2437d96dbb31d1fb11b63ce90364"
 dependencies = [
  "once_cell",
 ]
 
+[[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 = "pyo3-macros"
-version = "0.15.1"
+version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67701eb32b1f9a9722b4bc54b548ff9d7ebfded011c12daece7b9063be1fd755"
+checksum = "dbff3a1579934968a53bcc78ac33663ed2577accda05d484097679cc8d28e52d"
 dependencies = [
+ "proc-macro2",
  "pyo3-macros-backend",
  "quote",
  "syn",
@@ -1088,9 +1060,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.15.1"
+version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f44f09e825ee49a105f2c7b23ebee50886a9aee0746f4dd5a704138a64b0218a"
+checksum = "90644126c8c1ac7b47f794dd20a5729f8646b91c49edb31689c90f8cb3c33ea9"
 dependencies = [
  "proc-macro2",
  "pyo3-build-config",
@@ -1181,9 +1153,9 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.2.10"
+version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8383f39639269cde97d255a32bdb68c047337295414940c68bdd30c2e13203ff"
+checksum = "8380fe0152551244f0747b1bf41737e0f8a74f97a14ccefd1148187271634f3c"
 dependencies = [
  "bitflags",
 ]
@@ -1518,9 +1490,9 @@ dependencies = [
 
 [[package]]
 name = "termcolor"
-version = "1.1.2"
+version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2dfed899f0eb03f32ee8c6a0aabdb8a7949659e3466561fc0adf54e26d88c5f4"
+checksum = "bab24d30b911b2376f3a13cc2cd443142f0c81dda04c118693e35b3835757755"
 dependencies = [
  "winapi-util",
 ]
@@ -1546,9 +1518,9 @@ dependencies = [
 
 [[package]]
 name = "textwrap"
-version = "0.14.2"
+version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0066c8d12af8b5acd21e00547c3797fde4e8677254a7ee429176ccebbe93dd80"
+checksum = "b1141d4d61095b28419e22cb0bbf02755f5e54e0526f97f1e3d1d160e60885fb"
 
 [[package]]
 name = "time"
diff --git a/python/Cargo.toml b/python/Cargo.toml
index bc037257..63b11437 100644
--- a/python/Cargo.toml
+++ b/python/Cargo.toml
@@ -17,4 +17,4 @@ doctest = false
 
 [dependencies]
 oxigraph = { version = "0.3.0-beta.4", path="../lib", features = ["http_client"] }
-pyo3 = { version = "0.15", features = ["extension-module", "abi3-py37"] }
+pyo3 = { version = "0.16", features = ["extension-module", "abi3-py37"] }