diff --git a/ci/deps/actions-311.yaml b/ci/deps/actions-311.yaml
index 9178d17d24ae5..b33e631ee2eee 100644
--- a/ci/deps/actions-311.yaml
+++ b/ci/deps/actions-311.yaml
@@ -44,6 +44,7 @@ dependencies:
   - psycopg2>=2.9.10
   - pyarrow>=13.0.0
   - pyiceberg>=0.8.1
+  - pydantic<2.12.0  # TMP pin to avoid pyiceberg/pydantic issues
   - pymysql>=1.1.1
   - pyreadstat>=1.2.8
   - pytables>=3.10.1
diff --git a/ci/deps/actions-312.yaml b/ci/deps/actions-312.yaml
index 068a39d5e8021..063b72d990988 100644
--- a/ci/deps/actions-312.yaml
+++ b/ci/deps/actions-312.yaml
@@ -44,6 +44,7 @@ dependencies:
   - psycopg2>=2.9.10
   - pyarrow>=13.0.0
   - pyiceberg>=0.8.1
+  - pydantic<2.12.0  # TMP pin to avoid pyiceberg/pydantic issues
   - pymysql>=1.1.1
   - pyreadstat>=1.2.8
   - pytables>=3.10.1