diff --git a/docs/en/installation.mdx b/docs/en/installation.mdx
index 5e94c94a7..c6899d6e6 100644
--- a/docs/en/installation.mdx
+++ b/docs/en/installation.mdx
@@ -171,6 +171,9 @@ We recommend using the `YAML` template scaffolding for a structured approach to
       ```shell
       uv add <package-name>
       ```
+      <Note>
+        As a supply-chain security measure, CrewAI's internal packages use `exclude-newer = "3 days"` in their `pyproject.toml` files. This means transitive dependencies pulled in by CrewAI won't resolve packages released less than 3 days ago. Your own direct dependencies are not affected by this policy. If you notice a transitive dependency is behind, you can pin the version you want explicitly in your project's dependencies.
+      </Note>
     - To run your crew, execute the following command in the root of your project:
       ```bash
       crewai run
diff --git a/lib/crewai-files/pyproject.toml b/lib/crewai-files/pyproject.toml
index 2e8ef4863..99f7c15c5 100644
--- a/lib/crewai-files/pyproject.toml
+++ b/lib/crewai-files/pyproject.toml
@@ -17,6 +17,9 @@ dependencies = [
     "av~=13.0.0",
 ]
 
+[tool.uv]
+exclude-newer = "3 days"
+
 [build-system]
 requires = ["hatchling"]
 build-backend = "hatchling.build"
diff --git a/lib/crewai-tools/pyproject.toml b/lib/crewai-tools/pyproject.toml
index 67e98b5c9..422c8466a 100644
--- a/lib/crewai-tools/pyproject.toml
+++ b/lib/crewai-tools/pyproject.toml
@@ -142,6 +142,9 @@ contextual = [
 ]
 
 
+[tool.uv]
+exclude-newer = "3 days"
+
 [build-system]
 requires = ["hatchling"]
 build-backend = "hatchling.build"
diff --git a/lib/crewai/pyproject.toml b/lib/crewai/pyproject.toml
index de26cb784..8265f15b4 100644
--- a/lib/crewai/pyproject.toml
+++ b/lib/crewai/pyproject.toml
@@ -115,6 +115,9 @@ qdrant-edge = [
 crewai = "crewai.cli.cli:crewai"
 
 
+[tool.uv]
+exclude-newer = "3 days"
+
 # PyTorch index configuration, since torch 2.5.0 is not compatible with python 3.13
 [[tool.uv.index]]
 name = "pytorch-nightly"
diff --git a/lib/devtools/pyproject.toml b/lib/devtools/pyproject.toml
index 4c5f2d605..e02375241 100644
--- a/lib/devtools/pyproject.toml
+++ b/lib/devtools/pyproject.toml
@@ -25,6 +25,9 @@ release = "crewai_devtools.cli:release"
 docs-check = "crewai_devtools.docs_check:docs_check"
 devtools = "crewai_devtools.cli:main"
 
+[tool.uv]
+exclude-newer = "3 days"
+
 [build-system]
 requires = ["hatchling"]
 build-backend = "hatchling.build"
diff --git a/pyproject.toml b/pyproject.toml
index 1667ca25b..44b966533 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -160,6 +160,7 @@ info = "Commits must follow Conventional Commits 1.0.0."
 
 
 [tool.uv]
+exclude-newer = "3 days"
 
 # composio-core pins rich<14 but textual requires rich>=14.
 # onnxruntime 1.24+ dropped Python 3.10 wheels; cap it so qdrant[fastembed] resolves on 3.10.