diff --git a/adk/pyproject.toml b/adk/pyproject.toml
index 183d2999a..d8968334e 100644
--- a/adk/pyproject.toml
+++ b/adk/pyproject.toml
@@ -41,7 +41,14 @@ dependencies = [
     # LLM provider integrations
     "litellm>=1.83.7,<2",
     "openai-agents>=0.14.3,<0.15",
-    "openai>=2.2,<3", # Required by openai-agents; litellm now supports openai 2.x (issue #13711 resolved: https://github.com/BerriAI/litellm/issues/13711)
+    # Cap <2.45: openai 2.45.0 makes InputTokensDetails.cache_write_tokens a
+    # required field, but openai-agents 0.14.x still builds
+    # InputTokensDetails(cached_tokens=0) (agents/usage.py), so every
+    # Runner.run_streamed raises a pydantic ValidationError at context setup.
+    # openai-agents 0.14.8 is the latest release, so there is no newer version
+    # to bump to; drop this ceiling once openai-agents ships a fix.
+    # litellm now supports openai 2.x (issue #13711 resolved: https://github.com/BerriAI/litellm/issues/13711)
+    "openai>=2.2,<2.45",
     "claude-agent-sdk>=0.1.0",
     "pydantic-ai-slim>=1.0,<2",
     "langgraph-checkpoint>=2.0.0",
diff --git a/uv.lock b/uv.lock
index 6262ccc38..43de6493c 100644
--- a/uv.lock
+++ b/uv.lock
@@ -91,7 +91,7 @@ dev = [
 
 [[package]]
 name = "agentex-sdk"
-version = "0.13.0"
+version = "0.17.0"
 source = { editable = "adk" }
 dependencies = [
     { name = "agentex-client" },
@@ -144,7 +144,7 @@ requires-dist = [
     { name = "langgraph-checkpoint", specifier = ">=2.0.0" },
     { name = "litellm", specifier = ">=1.83.7,<2" },
     { name = "mcp", specifier = ">=1.4.1" },
-    { name = "openai", specifier = ">=2.2,<3" },
+    { name = "openai", specifier = ">=2.2,<2.45" },
     { name = "openai-agents", specifier = ">=0.14.3,<0.15" },
     { name = "opentelemetry-api", specifier = ">=1.20.0" },
     { name = "opentelemetry-sdk", specifier = ">=1.20.0" },