diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index a92afdfa..accf4f8c 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -33,6 +33,11 @@ jobs:
 
       - name: Install uv
         uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86  # v5
+        with:
+          # Pin a concrete version so the action skips the api.github.com
+          # release-resolution call. The shared act_runner egress IP is
+          # rate-limited on anonymous GitHub API after the org suspension.
+          version: "0.11.11"
 
       - name: Set up Python 3.11
         run: uv python install 3.11
@@ -62,6 +67,11 @@ jobs:
 
       - name: Install uv
         uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86  # v5
+        with:
+          # Pin a concrete version so the action skips the api.github.com
+          # release-resolution call. The shared act_runner egress IP is
+          # rate-limited on anonymous GitHub API after the org suspension.
+          version: "0.11.11"
 
       - name: Set up Python 3.11
         run: uv python install 3.11