diff --git a/.ci_support/migrations/libabseil20230802_libgrpc157_libprotobuf4234.yaml b/.ci_support/migrations/libabseil20230802_libgrpc157_libprotobuf4234.yaml
deleted file mode 100644
index 3781ea0c..00000000
--- a/.ci_support/migrations/libabseil20230802_libgrpc157_libprotobuf4234.yaml
+++ /dev/null
@@ -1,13 +0,0 @@
-__migrator:
-  build_number: 1
-  kind: version
-  migration_number: 1
-libabseil:
-- 20230802
-libgrpc:
-- "1.57"
-libprotobuf:
-- 4.23.4
-MACOSX_DEPLOYMENT_TARGET:  # [osx and x86_64]
-- "10.13"                  # [osx and x86_64]
-migrator_ts: 1692632590.658328
diff --git a/.ci_support/migrations/libabseil20240116_libgrpc161_libprotobuf4252.yaml b/.ci_support/migrations/libabseil20240116_libgrpc161_libprotobuf4252.yaml
deleted file mode 100644
index 08cd5a02..00000000
--- a/.ci_support/migrations/libabseil20240116_libgrpc161_libprotobuf4252.yaml
+++ /dev/null
@@ -1,22 +0,0 @@
-__migrator:
-  build_number: 1
-  commit_message: Rebuild for libabseil 20240116, libgrp 1.61, libprotobuf 4.25.2
-  kind: version
-  migration_number: 1
-  exclude:
-    - abseil-cpp
-    - grpc-cpp
-    - libprotobuf
-    # this shouldn't attempt to modify the python feedstocks
-    - protobuf
-libabseil:
-- "20240116"
-libgrpc:
-- "1.61"
-libprotobuf:
-- 4.25.2
-# already covered by libabseil20230802_libgrpc157_libprotobuf4234,
-# which we cannot delete yet, but keep for clarity
-MACOSX_DEPLOYMENT_TARGET:  # [osx and x86_64]
-- "10.13"                  # [osx and x86_64]
-migrator_ts: 1705991934.9119136
diff --git a/.ci_support/migrations/libgrpc162_libprotobuf4253.yaml b/.ci_support/migrations/libgrpc162_libprotobuf4253.yaml
deleted file mode 100644
index 16b401a5..00000000
--- a/.ci_support/migrations/libgrpc162_libprotobuf4253.yaml
+++ /dev/null
@@ -1,23 +0,0 @@
-__migrator:
-  build_number: 1
-  commit_message: Rebuild for libprotobuf 4.25.3
-  kind: version
-  migration_number: 1
-  exclude:
-    - abseil-cpp
-    - grpc-cpp
-    - libprotobuf
-    - protobuf
-libgrpc:
-- "1.62"
-libprotobuf:
-- 4.25.3
-# keep abseil bump from libabseil20240116_libgrpc161_libprotobuf4252;
-# this ensures that this migration applies also without the previous one
-libabseil:
-- "20240116"
-# already covered by libabseil20230802_libgrpc157_libprotobuf4234,
-# which we cannot delete yet, but keep for clarity
-MACOSX_DEPLOYMENT_TARGET:  # [osx and x86_64]
-- "10.13"                  # [osx and x86_64]
-migrator_ts: 1709522594.9193177
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 1312f7e3..cdb51eb3 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -1,4 +1,4 @@
-{% set version = "0.4.23" %}
+{% set version = "0.4.28" %}
 {% set number = 1 %}
 
 {% if cuda_compiler_version != "None" %}
@@ -13,7 +13,7 @@ package:
 source:
   # only pull sources after upstream PyPI release...
   url: https://github.com/google/jax/archive/jaxlib-v{{ version }}.tar.gz
-  sha256: e4c06d62ba54becffd91abc862627b8b11b79c5a77366af8843b819665b6d568
+  sha256: 4dd11577d4ba5a095fbc35258ddd4e4c020829ed6e6afd498c9e38ccbcdfe20b
   patches:
     - patches/0001-Allow-for-custom-CUDA-build.patch
     - patches/0002-xla-Support-third-party-build-of-boringssl.patch