diff --git a/.github/scripts/check_diff.py b/.github/scripts/check_diff.py
index 4ee411a00a1..e10c152ef25 100644
--- a/.github/scripts/check_diff.py
+++ b/.github/scripts/check_diff.py
@@ -16,6 +16,18 @@ LANGCHAIN_DIRS = [
     "libs/experimental",
 ]
 
+# ignored partners are removed from dependents
+# but still run if directly edited
+IGNORED_PARTNERS = [
+    # remove huggingface from dependents because of CI instability
+    # specifically in huggingface jobs
+    # https://github.com/langchain-ai/langchain/issues/25558
+    "huggingface",
+    # remove ai21 because of breaking changes in sdk version 2.14.0
+    # that have not been fixed yet
+    "ai21",
+]
+
 
 def all_package_dirs() -> Set[str]:
     return {
@@ -69,12 +81,10 @@ def dependents_graph() -> dict:
                     if "langchain" in dep:
                         dependents[dep].add(pkg_dir)
 
-    # remove huggingface from dependents because of CI instability
-    # specifically in huggingface jobs
-    # https://github.com/langchain-ai/langchain/issues/25558
     for k in dependents:
-        if "libs/partners/huggingface" in dependents[k]:
-            dependents[k].remove("libs/partners/huggingface")
+        for partner in IGNORED_PARTNERS:
+            if f"libs/partners/{partner}" in dependents[k]:
+                dependents[k].remove(f"libs/partners/{partner}")
     return dependents
 
 
diff --git a/.github/workflows/_test.yml b/.github/workflows/_test.yml
index 843eab8353f..d73ffe65e05 100644
--- a/.github/workflows/_test.yml
+++ b/.github/workflows/_test.yml
@@ -75,12 +75,11 @@ jobs:
           echo "min-versions=$min_versions" >> "$GITHUB_OUTPUT"
           echo "min-versions=$min_versions"
 
-# Temporarily disabled until we can get the minimum versions working
-#      - name: Run unit tests with minimum dependency versions
-#        if: ${{ steps.min-version.outputs.min-versions != '' }}
-#        env:
-#          MIN_VERSIONS: ${{ steps.min-version.outputs.min-versions }}
-#        run: |
-#          poetry run pip install --force-reinstall $MIN_VERSIONS --editable .
-#          make tests
-#        working-directory: ${{ inputs.working-directory }}
+      - name: Run unit tests with minimum dependency versions
+        if: ${{ steps.min-version.outputs.min-versions != '' }}
+        env:
+          MIN_VERSIONS: ${{ steps.min-version.outputs.min-versions }}
+        run: |
+          poetry run pip install --force-reinstall $MIN_VERSIONS --editable .
+          make tests
+        working-directory: ${{ inputs.working-directory }}
diff --git a/libs/core/tests/unit_tests/runnables/test_runnable.py b/libs/core/tests/unit_tests/runnables/test_runnable.py
index 2b1d173df96..13d28b4d922 100644
--- a/libs/core/tests/unit_tests/runnables/test_runnable.py
+++ b/libs/core/tests/unit_tests/runnables/test_runnable.py
@@ -3133,7 +3133,7 @@ def test_map_stream() -> None:
     assert streamed_chunks[0] in [
         {"passthrough": prompt.invoke({"question": "What is your name?"})},
         {"llm": "i"},
-        {"chat": AIMessageChunk(content="i")},
+        {"chat": _AnyIdAIMessageChunk(content="i")},
     ]
     assert len(streamed_chunks) == len(chat_res) + len(llm_res) + 1
     assert all(len(c.keys()) == 1 for c in streamed_chunks)
@@ -3191,7 +3191,7 @@ def test_map_stream() -> None:
 
     assert streamed_chunks[0] in [
         {"llm": "i"},
-        {"chat": AIMessageChunk(content="i")},
+        {"chat": _AnyIdAIMessageChunk(content="i")},
     ]
     assert len(streamed_chunks) == len(llm_res) + len(chat_res)
 
@@ -3234,7 +3234,7 @@ def test_map_stream_iterator_input() -> None:
     assert streamed_chunks[0] in [
         {"passthrough": "i"},
         {"llm": "i"},
-        {"chat": AIMessageChunk(content="i")},
+        {"chat": _AnyIdAIMessageChunk(content="i")},
     ]
     assert len(streamed_chunks) == len(chat_res) + len(llm_res) + len(llm_res)
     assert all(len(c.keys()) == 1 for c in streamed_chunks)