diff --git a/pkgs/development/python-modules/jupyter-ydoc/default.nix b/pkgs/development/python-modules/jupyter-ydoc/default.nix
index 0d7d3581edabf..98e99eb297c16 100644
--- a/pkgs/development/python-modules/jupyter-ydoc/default.nix
+++ b/pkgs/development/python-modules/jupyter-ydoc/default.nix
@@ -21,6 +21,7 @@ buildPythonPackage (finalAttrs: {
   pname = "jupyter-ydoc";
   version = "3.4.1";
   pyproject = true;
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "jupyter-server";
@@ -34,6 +35,9 @@ buildPythonPackage (finalAttrs: {
     hatchling
   ];
 
+  pythonRelaxDeps = [
+    "pycrdt"
+  ];
   dependencies = [
     anyio
     pycrdt
diff --git a/pkgs/development/python-modules/pycrdt-store/default.nix b/pkgs/development/python-modules/pycrdt-store/default.nix
index ae00c9a260d4c..374d2efe93f5f 100644
--- a/pkgs/development/python-modules/pycrdt-store/default.nix
+++ b/pkgs/development/python-modules/pycrdt-store/default.nix
@@ -16,15 +16,16 @@
   trio,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "pycrdt-store";
   version = "0.1.3";
   pyproject = true;
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "y-crdt";
     repo = "pycrdt-store";
-    tag = version;
+    tag = finalAttrs.version;
     hash = "sha256-KlB3BDhL/dt1IaQvWOfq1hgTKptrobgoBpus/mjZ26M=";
   };
 
@@ -32,6 +33,9 @@ buildPythonPackage rec {
     hatchling
   ];
 
+  pythonRelaxDeps = [
+    "pycrdt"
+  ];
   dependencies = [
     anyio
     pycrdt
@@ -50,8 +54,8 @@ buildPythonPackage rec {
   meta = {
     description = "Persistent storage for pycrdt";
     homepage = "https://github.com/y-crdt/pycrdt-store";
-    changelog = "https://github.com/y-crdt/pycrdt-store/blob/${src.tag}/CHANGELOG.md";
+    changelog = "https://github.com/y-crdt/pycrdt-store/blob/${finalAttrs.src.tag}/CHANGELOG.md";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ sarahec ];
   };
-}
+})
diff --git a/pkgs/development/python-modules/pycrdt-websocket/default.nix b/pkgs/development/python-modules/pycrdt-websocket/default.nix
index fd6b9d80a1bea..01f4e693bb39a 100644
--- a/pkgs/development/python-modules/pycrdt-websocket/default.nix
+++ b/pkgs/development/python-modules/pycrdt-websocket/default.nix
@@ -25,20 +25,24 @@
   websockets,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "pycrdt-websocket";
   version = "0.16.0";
   pyproject = true;
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "y-crdt";
     repo = "pycrdt-websocket";
-    tag = version;
+    tag = finalAttrs.version;
     hash = "sha256-Qux8IxJR1nGbdpGz7RZBKJjYN0qfwfEpd2UDlduOna0=";
   };
 
   build-system = [ hatchling ];
 
+  pythonRelaxDeps = [
+    "pycrdt"
+  ];
   dependencies = [
     anyio
     pycrdt
@@ -79,8 +83,8 @@ buildPythonPackage rec {
   meta = {
     description = "WebSocket Connector for pycrdt";
     homepage = "https://github.com/jupyter-server/pycrdt-websocket";
-    changelog = "https://github.com/jupyter-server/pycrdt-websocket/blob/${src.tag}/CHANGELOG.md";
+    changelog = "https://github.com/jupyter-server/pycrdt-websocket/blob/${finalAttrs.src.tag}/CHANGELOG.md";
     license = lib.licenses.mit;
     teams = [ lib.teams.jupyter ];
   };
-}
+})
diff --git a/pkgs/development/python-modules/pycrdt/Cargo.lock b/pkgs/development/python-modules/pycrdt/Cargo.lock
index cf11b8daccfe7..a4b5f93bf0cba 100644
--- a/pkgs/development/python-modules/pycrdt/Cargo.lock
+++ b/pkgs/development/python-modules/pycrdt/Cargo.lock
@@ -4,9 +4,9 @@ version = 4
 
 [[package]]
 name = "arc-swap"
-version = "1.9.0"
+version = "1.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a07d1f37ff60921c83bdfc7407723bdefe89b44b98a9b772f225c8f9d67141a6"
+checksum = "6a3a1fd6f75306b68087b831f025c712524bcb19aad54e557b1129cfa0a2b207"
 dependencies = [
  "rustversion",
 ]
@@ -35,9 +35,9 @@ dependencies = [
 
 [[package]]
 name = "bitflags"
-version = "2.11.0"
+version = "2.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "843867be96c8daad0d758b57df9392b6d8d271134fce549de6ce169ff98a92af"
+checksum = "c4512299f36f043ab09a583e57bceb5a5aab7a73db1805848e8fef3c9e8c78b3"
 
 [[package]]
 name = "bumpalo"
@@ -103,23 +103,24 @@ dependencies = [
 
 [[package]]
 name = "fastrand"
-version = "2.3.0"
+version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
+checksum = "9f1f227452a390804cdb637b74a86990f2a7d7ba4b7d5693aac9b4dd6defd8d6"
 dependencies = [
  "getrandom",
 ]
 
 [[package]]
 name = "getrandom"
-version = "0.2.17"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ff2abc00be7fca6ebc474524697ae276ad847ad0a6b3faa4bcb027e9a4614ad0"
+checksum = "899def5c37c4fd7b2664648c28120ecec138e4d395b459e5ca34f9cce2dd77fd"
 dependencies = [
  "cfg-if",
  "js-sys",
  "libc",
- "wasi",
+ "r-efi",
+ "wasip2",
  "wasm-bindgen",
 ]
 
@@ -143,19 +144,20 @@ checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
 
 [[package]]
 name = "js-sys"
-version = "0.3.91"
+version = "0.3.97"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b49715b7073f385ba4bc528e5747d02e66cb39c6146efb66b781f131f0fb399c"
+checksum = "a1840c94c045fbcf8ba2812c95db44499f7c64910a912551aaaa541decebcacf"
 dependencies = [
+ "cfg-if",
  "once_cell",
  "wasm-bindgen",
 ]
 
 [[package]]
 name = "libc"
-version = "0.2.183"
+version = "0.2.186"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5b646652bf6661599e1da8901b3b9522896f01e736bad5f723fe7a3a27f899d"
+checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
 
 [[package]]
 name = "lock_api"
@@ -220,7 +222,7 @@ dependencies = [
 
 [[package]]
 name = "pycrdt"
-version = "0.12.50"
+version = "0.13.0"
 dependencies = [
  "pyo3",
  "serde_json",
@@ -229,9 +231,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.28.2"
+version = "0.28.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf85e27e86080aafd5a22eae58a162e133a589551542b3e5cee4beb27e54f8e1"
+checksum = "91fd8e38a3b50ed1167fb981cd6fd60147e091784c427b8f7183a7ee32c31c12"
 dependencies = [
  "libc",
  "once_cell",
@@ -243,18 +245,18 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.28.2"
+version = "0.28.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8bf94ee265674bf76c09fa430b0e99c26e319c945d96ca0d5a8215f31bf81cf7"
+checksum = "e368e7ddfdeb98c9bca7f8383be1648fd84ab466bf2bc015e94008db6d35611e"
 dependencies = [
  "target-lexicon",
 ]
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.28.2"
+version = "0.28.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "491aa5fc66d8059dd44a75f4580a2962c1862a1c2945359db36f6c2818b748dc"
+checksum = "7f29e10af80b1f7ccaf7f69eace800a03ecd13e883acfacc1e5d0988605f651e"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -262,9 +264,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.28.2"
+version = "0.28.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f5d671734e9d7a43449f8480f8b38115df67bef8d21f76837fa75ee7aaa5e52e"
+checksum = "df6e520eff47c45997d2fc7dd8214b25dd1310918bbb2642156ef66a67f29813"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -274,9 +276,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.28.2"
+version = "0.28.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22faaa1ce6c430a1f71658760497291065e6450d7b5dc2bcf254d49f66ee700a"
+checksum = "c4cdc218d835738f81c2338f822078af45b4afdf8b2e33cbb5916f108b813acb"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -294,6 +296,12 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "r-efi"
+version = "5.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
+
 [[package]]
 name = "redox_syscall"
 version = "0.5.18"
@@ -417,16 +425,19 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
 
 [[package]]
-name = "wasi"
-version = "0.11.1+wasi-snapshot-preview1"
+name = "wasip2"
+version = "1.0.3+wasi-0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
+checksum = "20064672db26d7cdc89c7798c48a0fdfac8213434a1186e5ef29fd560ae223d6"
+dependencies = [
+ "wit-bindgen",
+]
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.114"
+version = "0.2.120"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6532f9a5c1ece3798cb1c2cfdba640b9b3ba884f5db45973a6f442510a87d38e"
+checksum = "df52b6d9b87e0c74c9edfa1eb2d9bf85e5d63515474513aa50fa181b3c4f5db1"
 dependencies = [
  "cfg-if",
  "once_cell",
@@ -437,9 +448,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.114"
+version = "0.2.120"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "18a2d50fcf105fb33bb15f00e7a77b772945a2ee45dcf454961fd843e74c18e6"
+checksum = "78b1041f495fb322e64aca85f5756b2172e35cd459376e67f2a6c9dffcedb103"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -447,9 +458,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.114"
+version = "0.2.120"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03ce4caeaac547cdf713d280eda22a730824dd11e6b8c3ca9e42247b25c631e3"
+checksum = "9dcd0ff20416988a18ac686d4d4d0f6aae9ebf08a389ff5d29012b05af2a1b41"
 dependencies = [
  "bumpalo",
  "proc-macro2",
@@ -460,9 +471,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.114"
+version = "0.2.120"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "75a326b8c223ee17883a4251907455a2431acc2791c98c26279376490c378c16"
+checksum = "49757b3c82ebf16c57d69365a142940b384176c24df52a087fb748e2085359ea"
 dependencies = [
  "unicode-ident",
 ]
@@ -473,11 +484,17 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
 
+[[package]]
+name = "wit-bindgen"
+version = "0.57.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ebf944e87a7c253233ad6766e082e3cd714b5d03812acc24c318f549614536e"
+
 [[package]]
 name = "yrs"
-version = "0.25.0"
+version = "0.26.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6893d39bc55d014e4a1d0e71d06c0c41590d5cdeac35c126be44998bc320cff"
+checksum = "89512f2d869f9947e1c58d57ef86c8f4ca1b1e8ccf24d6e1ff8c7cdbd67d54df"
 dependencies = [
  "arc-swap",
  "async-lock",
diff --git a/pkgs/development/python-modules/pycrdt/default.nix b/pkgs/development/python-modules/pycrdt/default.nix
index fb11fa87245ae..05733b1f133a6 100644
--- a/pkgs/development/python-modules/pycrdt/default.nix
+++ b/pkgs/development/python-modules/pycrdt/default.nix
@@ -20,14 +20,15 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "pycrdt";
-  version = "0.12.50";
+  version = "0.13.0";
   pyproject = true;
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "y-crdt";
     repo = "pycrdt";
     tag = finalAttrs.version;
-    hash = "sha256-YtOgUzoqLnRslHrSWSkP+AexdaBR/1e+NH4gKSIKn9I=";
+    hash = "sha256-gfXdH/V2ZwxfxMFoA20cMv0ilgxuCULl4EFl2vqStqI=";
   };
 
   postPatch = ''