diff --git a/pkgs/development/python-modules/johnnycanencrypt/default.nix b/pkgs/development/python-modules/johnnycanencrypt/default.nix
index f0ee4a6bd99c..77789fa44dbe 100644
--- a/pkgs/development/python-modules/johnnycanencrypt/default.nix
+++ b/pkgs/development/python-modules/johnnycanencrypt/default.nix
@@ -61,6 +61,12 @@ rustPlatform.buildRustPackage rec {
     numpy
   ];
 
+  # Remove with the next release after 0.5.0. This change is required
+  # for compatibility with maturin 0.9.0.
+  postPatch = ''
+    sed '/project-url = /d' -i Cargo.toml
+  '';
+
   buildPhase = ''
     runHook preBuild
     maturin build --release --manylinux off --strip --cargo-extra-args="-j $NIX_BUILD_CORES --frozen"
diff --git a/pkgs/development/python-modules/wasmer/default.nix b/pkgs/development/python-modules/wasmer/default.nix
index 0bb60d6b9e30..62c8a2a06b71 100644
--- a/pkgs/development/python-modules/wasmer/default.nix
+++ b/pkgs/development/python-modules/wasmer/default.nix
@@ -8,7 +8,7 @@
 }:
 let
   pname = "wasmer";
-  version = "1.0.0-beta1";
+  version = "1.0.0";
 
   wheel = rustPlatform.buildRustPackage rec {
     inherit pname version;
@@ -17,10 +17,10 @@ let
       owner = "wasmerio";
       repo = "wasmer-python";
       rev = version;
-      sha256 = "0302lcfjlw7nz18nf86z6swhhpp1qnpwcsm2fj4avl22rsv0h78j";
+      hash = "sha256-I1GfjLaPYMIHKh2m/5IQepUsJNiVUEJg49wyuuzUYtY=";
     };
 
-    cargoHash = "sha256-Rq5m9Lu6kePvohfhODLMOpGPFtCh0woTsQY2TufoiNQ=";
+    cargoHash = "sha256-txOOia1C4W+nsXuXp4EytEn82CFfSmiOYwRLC4WPImc=";
 
     nativeBuildInputs = [ maturin python ];
 
diff --git a/pkgs/development/tools/rust/maturin/default.nix b/pkgs/development/tools/rust/maturin/default.nix
index ff52824ef9a4..d40145f163b2 100644
--- a/pkgs/development/tools/rust/maturin/default.nix
+++ b/pkgs/development/tools/rust/maturin/default.nix
@@ -5,16 +5,16 @@ let
   inherit (darwin.apple_sdk.frameworks) Security;
 in rustPlatform.buildRustPackage rec {
   name = "maturin-${version}";
-  version = "0.8.3";
+  version = "0.9.0";
 
   src = fetchFromGitHub {
     owner = "PyO3";
     repo = "maturin";
     rev = "v${version}";
-    sha256 = "08l5r7d75id6qzf8xhkjv4hkdr64cq4dbcmdjywmvf9szjbnr65z";
+    sha256 = "sha256-X5/1zEVhhdTuyXcUwC3jVv9Gblmv8LT+ftsVo8BnnZs=";
   };
 
-  cargoSha256 = "1n0sxkhcdg2rbzqd7826pa7sxlnn0c2sc8l6lc98xw21vvqisc8n";
+  cargoSha256 = "sha256-PBmuPIpCwC7fr/MKFaeSd/0avoEATlxoeMHisjouAeI=";
 
   nativeBuildInputs = [ pkg-config ];