diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8ad6693..b3703d6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 All notable changes to `uipath_llm_client` (core package) will be documented in this file.
 
+## [1.9.8] - 2026-04-22
+
+### Changed
+- Added upper-bound version constraints (`<next_major`) to all production and dev dependencies to prevent unexpected breaking changes from major-version upgrades.
+- `litellm` is now pinned to an exact version (`==1.83.7`) due to its frequent breaking changes between minor releases.
+
 ## [1.9.6] - 2026-04-22
 
 ### Changed
diff --git a/packages/uipath_langchain_client/CHANGELOG.md b/packages/uipath_langchain_client/CHANGELOG.md
index da3519e..ef4facf 100644
--- a/packages/uipath_langchain_client/CHANGELOG.md
+++ b/packages/uipath_langchain_client/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 All notable changes to `uipath_langchain_client` will be documented in this file.
 
+## [1.9.8] - 2026-04-22
+
+### Changed
+- Added upper-bound version constraints (`<next_major`) to all dependencies to prevent unexpected breaking changes from major-version upgrades.
+- `langchain-litellm` is pinned to an exact version (`==0.6.4`) alongside `litellm`.
+- Minimum `uipath-llm-client` bumped to 1.9.8 to match the core dependency-constraints release.
+
 ## [1.9.7] - 2026-04-22
 
 ### Changed
diff --git a/packages/uipath_langchain_client/pyproject.toml b/packages/uipath_langchain_client/pyproject.toml
index 9d1d9ac..d78d911 100644
--- a/packages/uipath_langchain_client/pyproject.toml
+++ b/packages/uipath_langchain_client/pyproject.toml
@@ -5,35 +5,35 @@ dynamic = ["version"]
 readme = "README.md"
 requires-python = ">=3.11"
 dependencies = [
-    "langchain>=1.2.15",
-    "uipath-llm-client>=1.9.6",
+    "langchain>=1.2.15,<2.0.0",
+    "uipath-llm-client>=1.9.8,<2.0.0",
 ]
 
 [project.optional-dependencies]
 openai = [
-    "langchain-openai>=1.1.16",
+    "langchain-openai>=1.1.16,<2.0.0",
 ]
 google = [
-    "langchain-google-genai>=4.2.2",
+    "langchain-google-genai>=4.2.2,<5.0.0",
 ]
 anthropic = [
-    "langchain-anthropic>=1.4.1",
-    "anthropic[bedrock,vertex]>=0.96.0",
+    "langchain-anthropic>=1.4.1,<2.0.0",
+    "anthropic[bedrock,vertex]>=0.96.0,<1.0.0",
 ]
 bedrock = [
-    "langchain-aws[anthropic]>=1.4.4",
+    "langchain-aws[anthropic]>=1.4.4,<2.0.0",
 ]
 vertexai = [
-    "langchain-google-vertexai>=3.2.2",
+    "langchain-google-vertexai>=3.2.2,<4.0.0",
 ]
 azure = [
-    "langchain-azure-ai>=1.2.2",
+    "langchain-azure-ai>=1.2.2,<2.0.0",
 ]
 fireworks = [
-    "langchain-fireworks>=1.1.0",
+    "langchain-fireworks>=1.1.0,<2.0.0",
 ]
 litellm = [
-    "langchain-litellm>=0.6.4",
+    "langchain-litellm==0.6.4",
 ]
 all = [
     "uipath-langchain-client[openai,bedrock,google,anthropic,azure,vertexai,fireworks,litellm]"
diff --git a/packages/uipath_langchain_client/src/uipath_langchain_client/__version__.py b/packages/uipath_langchain_client/src/uipath_langchain_client/__version__.py
index 40fb322..ba7f527 100644
--- a/packages/uipath_langchain_client/src/uipath_langchain_client/__version__.py
+++ b/packages/uipath_langchain_client/src/uipath_langchain_client/__version__.py
@@ -1,3 +1,3 @@
 __title__ = "UiPath LangChain Client"
 __description__ = "A Python client for interacting with UiPath's LLM services via LangChain."
-__version__ = "1.9.7"
+__version__ = "1.9.8"
diff --git a/pyproject.toml b/pyproject.toml
index 4d76328..b8d77bc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,11 +5,11 @@ description = "UiPath LLM Client"
 readme = "README.md"
 requires-python = ">=3.11"
 dependencies = [
-    "httpx>=0.28.1",
-    "tenacity>=9.1.4",
-    "pydantic>=2.12.5",
-    "pydantic-settings>=2.14.0",
-    "uipath-platform>=0.1.34",
+    "httpx>=0.28.1,<1.0.0",
+    "tenacity>=9.1.4,<10.0.0",
+    "pydantic>=2.12.5,<3.0.0",
+    "pydantic-settings>=2.14.0,<3.0.0",
+    "uipath-platform>=0.1.34,<1.0.0",
 ]
 
 authors = [
@@ -19,16 +19,16 @@ authors = [
 
 [project.optional-dependencies]
 openai = [
-    "openai>=2.30.0",
+    "openai>=2.30.0,<3.0.0",
 ]
 google = [
-    "google-genai>=1.73.1",
+    "google-genai>=1.73.1,<2.0.0",
 ]
 anthropic = [
-    "anthropic>=0.96.0",
+    "anthropic>=0.96.0,<1.0.0",
 ]
 litellm = [
-    "litellm>=1.83.7",
+    "litellm==1.83.7",
 ]
 all = [
     "uipath-llm-client[openai,google,anthropic,litellm]",
@@ -36,15 +36,15 @@ all = [
 
 [dependency-groups]
 dev = [
-    "langchain-tests>=1.1.6",
-    "pytest>=9.0.3",
-    "pytest-asyncio>=1.3.0",
-    "pytest-recording>=0.13.4",
-    "pyright>=1.1.408",
-    "ruff>=0.15.11",
+    "langchain-tests>=1.1.6,<2.0.0",
+    "pytest>=9.0.3,<10.0.0",
+    "pytest-asyncio>=1.3.0,<2.0.0",
+    "pytest-recording>=0.13.4,<1.0.0",
+    "pyright>=1.1.408,<2.0.0",
+    "ruff>=0.15.11,<1.0.0",
     "uipath-llm-client[all]",
     "uipath_langchain_client[all]",
-    "openinference-instrumentation-langchain>=0.1.63",
+    "openinference-instrumentation-langchain>=0.1.63,<1.0.0",
 ]
 
 [tool.uv.workspace]
diff --git a/src/uipath/llm_client/__version__.py b/src/uipath/llm_client/__version__.py
index 87c3e08..9098cf3 100644
--- a/src/uipath/llm_client/__version__.py
+++ b/src/uipath/llm_client/__version__.py
@@ -1,3 +1,3 @@
 __title__ = "UiPath LLM Client"
 __description__ = "A Python client for interacting with UiPath's LLM services."
-__version__ = "1.9.6"
+__version__ = "1.9.8"
diff --git a/uv.lock b/uv.lock
index 444ae25..f896e57 100644
--- a/uv.lock
+++ b/uv.lock
@@ -3609,25 +3609,25 @@ vertexai = [
 
 [package.metadata]
 requires-dist = [
-    { name = "anthropic", extras = ["bedrock", "vertex"], marker = "extra == 'all'", specifier = ">=0.96.0" },
-    { name = "anthropic", extras = ["bedrock", "vertex"], marker = "extra == 'anthropic'", specifier = ">=0.96.0" },
-    { name = "langchain", specifier = ">=1.2.15" },
-    { name = "langchain-anthropic", marker = "extra == 'all'", specifier = ">=1.4.1" },
-    { name = "langchain-anthropic", marker = "extra == 'anthropic'", specifier = ">=1.4.1" },
-    { name = "langchain-aws", extras = ["anthropic"], marker = "extra == 'all'", specifier = ">=1.4.4" },
-    { name = "langchain-aws", extras = ["anthropic"], marker = "extra == 'bedrock'", specifier = ">=1.4.4" },
-    { name = "langchain-azure-ai", marker = "extra == 'all'", specifier = ">=1.2.2" },
-    { name = "langchain-azure-ai", marker = "extra == 'azure'", specifier = ">=1.2.2" },
-    { name = "langchain-fireworks", marker = "extra == 'all'", specifier = ">=1.1.0" },
-    { name = "langchain-fireworks", marker = "extra == 'fireworks'", specifier = ">=1.1.0" },
-    { name = "langchain-google-genai", marker = "extra == 'all'", specifier = ">=4.2.2" },
-    { name = "langchain-google-genai", marker = "extra == 'google'", specifier = ">=4.2.2" },
-    { name = "langchain-google-vertexai", marker = "extra == 'all'", specifier = ">=3.2.2" },
-    { name = "langchain-google-vertexai", marker = "extra == 'vertexai'", specifier = ">=3.2.2" },
-    { name = "langchain-litellm", marker = "extra == 'all'", specifier = ">=0.6.4" },
-    { name = "langchain-litellm", marker = "extra == 'litellm'", specifier = ">=0.6.4" },
-    { name = "langchain-openai", marker = "extra == 'all'", specifier = ">=1.1.16" },
-    { name = "langchain-openai", marker = "extra == 'openai'", specifier = ">=1.1.16" },
+    { name = "anthropic", extras = ["bedrock", "vertex"], marker = "extra == 'all'", specifier = ">=0.96.0,<1.0.0" },
+    { name = "anthropic", extras = ["bedrock", "vertex"], marker = "extra == 'anthropic'", specifier = ">=0.96.0,<1.0.0" },
+    { name = "langchain", specifier = ">=1.2.15,<2.0.0" },
+    { name = "langchain-anthropic", marker = "extra == 'all'", specifier = ">=1.4.1,<2.0.0" },
+    { name = "langchain-anthropic", marker = "extra == 'anthropic'", specifier = ">=1.4.1,<2.0.0" },
+    { name = "langchain-aws", extras = ["anthropic"], marker = "extra == 'all'", specifier = ">=1.4.4,<2.0.0" },
+    { name = "langchain-aws", extras = ["anthropic"], marker = "extra == 'bedrock'", specifier = ">=1.4.4,<2.0.0" },
+    { name = "langchain-azure-ai", marker = "extra == 'all'", specifier = ">=1.2.2,<2.0.0" },
+    { name = "langchain-azure-ai", marker = "extra == 'azure'", specifier = ">=1.2.2,<2.0.0" },
+    { name = "langchain-fireworks", marker = "extra == 'all'", specifier = ">=1.1.0,<2.0.0" },
+    { name = "langchain-fireworks", marker = "extra == 'fireworks'", specifier = ">=1.1.0,<2.0.0" },
+    { name = "langchain-google-genai", marker = "extra == 'all'", specifier = ">=4.2.2,<5.0.0" },
+    { name = "langchain-google-genai", marker = "extra == 'google'", specifier = ">=4.2.2,<5.0.0" },
+    { name = "langchain-google-vertexai", marker = "extra == 'all'", specifier = ">=3.2.2,<4.0.0" },
+    { name = "langchain-google-vertexai", marker = "extra == 'vertexai'", specifier = ">=3.2.2,<4.0.0" },
+    { name = "langchain-litellm", marker = "extra == 'all'", specifier = "==0.6.4" },
+    { name = "langchain-litellm", marker = "extra == 'litellm'", specifier = "==0.6.4" },
+    { name = "langchain-openai", marker = "extra == 'all'", specifier = ">=1.1.16,<2.0.0" },
+    { name = "langchain-openai", marker = "extra == 'openai'", specifier = ">=1.1.16,<2.0.0" },
     { name = "uipath-llm-client", editable = "." },
 ]
 provides-extras = ["all", "anthropic", "azure", "bedrock", "fireworks", "google", "litellm", "openai", "vertexai"]
@@ -3678,31 +3678,31 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "anthropic", marker = "extra == 'all'", specifier = ">=0.96.0" },
-    { name = "anthropic", marker = "extra == 'anthropic'", specifier = ">=0.96.0" },
-    { name = "google-genai", marker = "extra == 'all'", specifier = ">=1.73.1" },
-    { name = "google-genai", marker = "extra == 'google'", specifier = ">=1.73.1" },
-    { name = "httpx", specifier = ">=0.28.1" },
-    { name = "litellm", marker = "extra == 'all'", specifier = ">=1.83.7" },
-    { name = "litellm", marker = "extra == 'litellm'", specifier = ">=1.83.7" },
-    { name = "openai", marker = "extra == 'all'", specifier = ">=2.30.0" },
-    { name = "openai", marker = "extra == 'openai'", specifier = ">=2.30.0" },
-    { name = "pydantic", specifier = ">=2.12.5" },
-    { name = "pydantic-settings", specifier = ">=2.14.0" },
-    { name = "tenacity", specifier = ">=9.1.4" },
-    { name = "uipath-platform", specifier = ">=0.1.34" },
+    { name = "anthropic", marker = "extra == 'all'", specifier = ">=0.96.0,<1.0.0" },
+    { name = "anthropic", marker = "extra == 'anthropic'", specifier = ">=0.96.0,<1.0.0" },
+    { name = "google-genai", marker = "extra == 'all'", specifier = ">=1.73.1,<2.0.0" },
+    { name = "google-genai", marker = "extra == 'google'", specifier = ">=1.73.1,<2.0.0" },
+    { name = "httpx", specifier = ">=0.28.1,<1.0.0" },
+    { name = "litellm", marker = "extra == 'all'", specifier = "==1.83.7" },
+    { name = "litellm", marker = "extra == 'litellm'", specifier = "==1.83.7" },
+    { name = "openai", marker = "extra == 'all'", specifier = ">=2.30.0,<3.0.0" },
+    { name = "openai", marker = "extra == 'openai'", specifier = ">=2.30.0,<3.0.0" },
+    { name = "pydantic", specifier = ">=2.12.5,<3.0.0" },
+    { name = "pydantic-settings", specifier = ">=2.14.0,<3.0.0" },
+    { name = "tenacity", specifier = ">=9.1.4,<10.0.0" },
+    { name = "uipath-platform", specifier = ">=0.1.34,<1.0.0" },
 ]
 provides-extras = ["all", "anthropic", "google", "litellm", "openai"]
 
 [package.metadata.requires-dev]
 dev = [
-    { name = "langchain-tests", specifier = ">=1.1.6" },
-    { name = "openinference-instrumentation-langchain", specifier = ">=0.1.63" },
-    { name = "pyright", specifier = ">=1.1.408" },
-    { name = "pytest", specifier = ">=9.0.3" },
-    { name = "pytest-asyncio", specifier = ">=1.3.0" },
-    { name = "pytest-recording", specifier = ">=0.13.4" },
-    { name = "ruff", specifier = ">=0.15.11" },
+    { name = "langchain-tests", specifier = ">=1.1.6,<2.0.0" },
+    { name = "openinference-instrumentation-langchain", specifier = ">=0.1.63,<1.0.0" },
+    { name = "pyright", specifier = ">=1.1.408,<2.0.0" },
+    { name = "pytest", specifier = ">=9.0.3,<10.0.0" },
+    { name = "pytest-asyncio", specifier = ">=1.3.0,<2.0.0" },
+    { name = "pytest-recording", specifier = ">=0.13.4,<1.0.0" },
+    { name = "ruff", specifier = ">=0.15.11,<1.0.0" },
     { name = "uipath-langchain-client", extras = ["all"], editable = "packages/uipath_langchain_client" },
     { name = "uipath-llm-client", extras = ["all"], editable = "." },
 ]