diff --git a/pkgs/development/python-modules/jax/default.nix b/pkgs/development/python-modules/jax/default.nix
index 203aa49db8fb..d2052cccecb0 100644
--- a/pkgs/development/python-modules/jax/default.nix
+++ b/pkgs/development/python-modules/jax/default.nix
@@ -27,7 +27,7 @@ let
 in
 buildPythonPackage rec {
   pname = "jax";
-  version = "0.4.20";
+  version = "0.4.21";
   pyproject = true;
 
   disabled = pythonOlder "3.9";
@@ -37,7 +37,7 @@ buildPythonPackage rec {
     repo = "jax";
     # google/jax contains tags for jax and jaxlib. Only use jax tags!
     rev = "refs/tags/${pname}-v${version}";
-    hash = "sha256-WLYXUtchOaA6SGnKuVhN9CmV06xMCLQTEuEtL13ttZU=";
+    hash = "sha256-CMsW/t4/itJxN4pST8EKkN0ooHWdjRnLs073FwbXRJM=";
   };
 
   nativeBuildInputs = [
diff --git a/pkgs/development/python-modules/jaxlib/bin.nix b/pkgs/development/python-modules/jaxlib/bin.nix
index e35b4759bd64..139cb881e591 100644
--- a/pkgs/development/python-modules/jaxlib/bin.nix
+++ b/pkgs/development/python-modules/jaxlib/bin.nix
@@ -35,7 +35,7 @@
 let
   inherit (cudaPackagesGoogle) cudatoolkit cudnn;
 
-  version = "0.4.20";
+  version = "0.4.21";
 
   inherit (python) pythonVersion;
 
@@ -56,65 +56,65 @@ let
       "3.9-x86_64-linux" = getSrcFromPypi {
         platform = "manylinux2014_x86_64";
         dist = "cp39";
-        hash = "sha256-eIE+rz5x5BEkO85zncIWE8p/wDPxV8bnVJdHiknS998=";
+        hash = "sha256-mFA/ZSlluDy96Dy7Ez5MyV/onyXOXfwr+v4YBJ8YAKM=";
       };
       "3.9-aarch64-darwin" = getSrcFromPypi {
         platform = "macosx_11_0_arm64";
         dist = "cp39";
-        hash = "sha256-dxInv8/aQiHsN7DpScuZao2ZyHDjF0AaTqUDA0qqg/M=";
+        hash = "sha256-pxFJPKl7LqwRpL0u53zAmp1XvFKPXv0tT/ioQ3EF/Cs=";
       };
       "3.9-x86_64-darwin" = getSrcFromPypi {
         platform = "macosx_10_14_x86_64";
         dist = "cp39";
-        hash = "sha256-wva6LkSokEHN+WQLCancVC7YBIxfImPsQpB1LzFcyqM=";
+        hash = "sha256-m8VBotK4tvrEgi8Ub5diHjTv8KU5C384srlSIRcX50o=";
       };
 
       "3.10-x86_64-linux" = getSrcFromPypi {
         platform = "manylinux2014_x86_64";
         dist = "cp310";
-        hash = "sha256-Yo2TYnkIelyy4vb5+nC/yY8SjV34i/jJvCe/VRQppmo=";
+        hash = "sha256-jd4+HWPtGt4xLCabVWg99MP+F2bwrhMAJ/BAXfRmIZE=";
       };
       "3.10-aarch64-darwin" = getSrcFromPypi {
         platform = "macosx_11_0_arm64";
         dist = "cp310";
-        hash = "sha256-ufA/ACE4s4R/Fiq5SN7T44SVEN1Z5OfkJ/98lKxRFmo=";
+        hash = "sha256-/zEl2jm9A5iwELPPaSeLlubaFyIkgwdNFzCMKaLvK2A=";
       };
       "3.10-x86_64-darwin" = getSrcFromPypi {
         platform = "macosx_10_14_x86_64";
         dist = "cp310";
-        hash = "sha256-hBSrYQyOGMn0BexRWQKYnJdEYYlzHUWuWGHmjVT10TE=";
+        hash = "sha256-BaMQQHdIGtRKDDvjacYLhD7lB058Q8ZYVo6JckVjyxE=";
       };
 
       "3.11-x86_64-linux" = getSrcFromPypi {
         platform = "manylinux2014_x86_64";
         dist = "cp311";
-        hash = "sha256-5N0nghTBrsa7d8kt8hZC2ghqlxCNC7U8ApD0PG7DHn8=";
+        hash = "sha256-/N41pyv1AOFegCXUH/XmOUiaAfH5/k/ydT8JaFGq+bM=";
       };
       "3.11-aarch64-darwin" = getSrcFromPypi {
         platform = "macosx_11_0_arm64";
         dist = "cp311";
-        hash = "sha256-j13Br64cKe0hFh/cMBbOMuTXqauAvSKE+KzEmN7U6RA=";
+        hash = "sha256-gYN77bddkBWYQIzPWXusN+xwpga47zSAFdQ4php+AZM=";
       };
       "3.11-x86_64-darwin" = getSrcFromPypi {
         platform = "macosx_10_14_x86_64";
         dist = "cp311";
-        hash = "sha256-nTnyawU4Ngq9VTE6oDuEfR6iJPRy+E/VLt98cU6eW4M=";
+        hash = "sha256-GaneuQIfERYAcHQtQ6OwL87098QS+h8GrZOfmef0a70=";
       };
 
       "3.12-x86_64-linux" = getSrcFromPypi {
         platform = "manylinux2014_x86_64";
         dist = "cp312";
-        hash = "sha256-qPMoa7cso7DRBWuCJQoiOEzLPL3m76MPZZMYmZUj400=";
+        hash = "sha256-AkyF07UGTfkQHJ/qN2lHe0ki1Fh1uJZkkGQYRkiTIis=";
       };
       "3.12-aarch64-darwin" = getSrcFromPypi {
         platform = "macosx_11_0_arm64";
         dist = "cp312";
-        hash = "sha256-VqTC5egDHaDIvwVa3sAc9Sdtd0CwEFcXjDU/i54h844=";
+        hash = "sha256-qGxiVdHNChS5WObW8j9E6G/oEa9FOLRY0/xowQNns0Y=";
       };
       "3.12-x86_64-darwin" = getSrcFromPypi {
         platform = "macosx_10_14_x86_64";
         dist = "cp312";
-        hash = "sha256-1F98Je2rMJJKrksI/EVAsX9n+dOpmDehUeAaMq/BY7o=";
+        hash = "sha256-eYDUrenaHxlCvBYbt12r2VMLBpBBU6o/3ekyj9Ll+AE=";
       };
     };
 
@@ -124,19 +124,19 @@ let
   gpuSrcs = {
     "3.9" = fetchurl {
       url = "https://storage.googleapis.com/jax-releases/cuda12/jaxlib-${version}+cuda12.cudnn89-cp39-cp39-manylinux2014_x86_64.whl";
-      hash = "sha256-VM2HuyMnG+hzrsTQEB5KJpqpBXyyp+eV1LVxmY1ZCGU=";
+      hash = "sha256-VKWX2pTgHWXzbUYXkshmPRxiBs6YDw1WeK72TY1koLc=";
     };
     "3.10" = fetchurl {
       url = "https://storage.googleapis.com/jax-releases/cuda12/jaxlib-${version}+cuda12.cudnn89-cp310-cp310-manylinux2014_x86_64.whl";
-      hash = "sha256-TLq3z3T2fjTcO3ESahboKG33mrOpjtj9C92f4d4nJKo=";
+      hash = "sha256-/4wNdMHNT1izYfyX58KH9CAgnQPcv1/GjNlKhFM4X/U=";
     };
     "3.11" = fetchurl {
       url = "https://storage.googleapis.com/jax-releases/cuda12/jaxlib-${version}+cuda12.cudnn89-cp311-cp311-manylinux2014_x86_64.whl";
-      hash = "sha256-CUXwyJq0HOo2j3Sw+NguBCnFkDuJpc3wfZUc90yyhOY=";
+      hash = "sha256-xAITc/5KbAiaKp6020OWFD7SL3FQGvE0jQcHckIjb7s=";
     };
     "3.12" = fetchurl {
       url = "https://storage.googleapis.com/jax-releases/cuda12/jaxlib-${version}+cuda12.cudnn89-cp312-cp312-manylinux2014_x86_64.whl";
-      hash = "sha256-bAR8FLtiqufU+rL2a1q9c61CjH1eXxGTNGnDUkHlDBA=";
+      hash = "sha256-tTbpoF/YINx2Vw1JNKsh3PqUbHqQ1XnQLGFczGmimCw=";
     };
   };
 
diff --git a/pkgs/development/python-modules/jaxlib/default.nix b/pkgs/development/python-modules/jaxlib/default.nix
index a04d6973ca4b..4293cc781cb8 100644
--- a/pkgs/development/python-modules/jaxlib/default.nix
+++ b/pkgs/development/python-modules/jaxlib/default.nix
@@ -54,7 +54,7 @@ let
   inherit (cudaPackagesGoogle) backendStdenv cudatoolkit cudaFlags cudnn nccl;
 
   pname = "jaxlib";
-  version = "0.4.20";
+  version = "0.4.21";
 
   meta = with lib; {
     description = "JAX is Autograd and XLA, brought together for high-performance machine learning research.";
@@ -150,7 +150,7 @@ let
       repo = "jax";
       # google/jax contains tags for jax and jaxlib. Only use jaxlib tags!
       rev = "refs/tags/${pname}-v${version}";
-      hash = "sha256-WLYXUtchOaA6SGnKuVhN9CmV06xMCLQTEuEtL13ttZU=";
+      hash = "sha256-CMsW/t4/itJxN4pST8EKkN0ooHWdjRnLs073FwbXRJM=";
     };
 
     nativeBuildInputs = [
@@ -263,10 +263,10 @@ let
       ];
 
       sha256 = (if cudaSupport then {
-        x86_64-linux = "sha256-QczClHxHElLZCqIZlHc3z3DXJ7rZQJaMs2XIb+lxarI=";
+        x86_64-linux = "sha256-TgIH7r1IXNkbOFSXvaKVbU9kL+TuQqxVrBge7iv2ykQ=";
       } else {
-        x86_64-linux = "sha256-mqiJe4u0NYh1PKCbQfbo0U2e9/kYiBqj98d+BPHFSxQ=";
-        aarch64-linux = "sha256-EuLqamVBJ+qoVMCFIYUT846AghltZolfLGdtO9UeXSM=";
+        x86_64-linux = "sha256-on14CAolJ3mvJmKxX2PE21BsYOJJFUSQuUOnOuVR2GQ=";
+        aarch64-linux = "sha256-2tcIiQlMUKMc+juCy+dt37s+lFqr2pcVizCyYkkQtOM=";
       }).${stdenv.system} or (throw "jaxlib: unsupported system: ${stdenv.system}");
     };