diff --git a/CHANGELOG.md b/CHANGELOG.md
index a43eb987..fb265d1e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 All notable changes to the Zowe Client Python SDK will be documented in this file.
 
+## Recent Changes
+
+### Bug Fixes
+
+- Downgraded the `jsonschema` dependency of the Core SDK for Python versions older than 3.14 to remove Rust dependency. [#390](https://github.com/zowe/zowe-client-python-sdk/pull/390)
+- Updated the `requests` dependency of the Core SDK for technical currency. [#390](https://github.com/zowe/zowe-client-python-sdk/pull/390)
+
 ## `1.0.0-dev25`
 
 - Support responseTimeout profile property for z/OSMF operations. [#369](https://github.com/zowe/zowe-client-python-sdk/pull/369)
diff --git a/README.md b/README.md
index f11e5b83..0844e120 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,9 @@ that can interact with z/OS components.
 
 ## Installation
 
+> [!WARNING]
+> On z/OS USS, Python 3.14 and newer versions are not supported due to missing Rust build tools. For details, see [#388](https://github.com/zowe/zowe-client-python-sdk/issues/388).
+
 When installing the Zowe Client Python SDK, you have two options:
 
 - Install all the Zowe packages
diff --git a/requirements.txt b/requirements.txt
index ca695e9b..c434c86c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,9 @@
 deepmerge==1.1.0
 json5==0.12.1
-jsonschema==4.25.1
+jsonschema==4.17.3; python_version<'3.14'
+jsonschema==4.25.1; python_version>='3.14'
 PyYAML==6.0.1
-requests==2.32.4
+requests==2.33.0
 
 # Dev deps
 setuptools
diff --git a/src/core/setup.py b/src/core/setup.py
index d1e1d488..6ca22b58 100644
--- a/src/core/setup.py
+++ b/src/core/setup.py
@@ -36,10 +36,13 @@
     install_requires=[
         "deepmerge~=1.1.0",
         "json5~=0.12.1",
-        "jsonschema~=4.25.1",
+        # Prefer older version of jsonschema without Rust dependency
+        "jsonschema~=4.17.3; python_version<'3.14'",
+        "jsonschema~=4.25.1; python_version>='3.14'",
         "pyyaml~=6.0.1",
-        "requests~=2.32.0",
-        "urllib3>=1.21.1,<3",  # Same version range that `requests` uses
+        "requests~=2.33.0",
+        # Pin urllib3 to the same version range that `requests` uses
+        "urllib3>=1.26,<3",
     ],
     extras_require={"secrets": [resolve_sdk_dep("secrets", "~=1.0.0.dev")]},
     packages=find_namespace_packages(include=["zowe.*"]),