diff --git a/libs/core/pyproject.toml b/libs/core/pyproject.toml
index 730e09cda9e..4a18b23cd56 100644
--- a/libs/core/pyproject.toml
+++ b/libs/core/pyproject.toml
@@ -88,7 +88,6 @@ ignore = [
     "COM812",  # Messes with the formatter
     "CPY",     # No copyright
     "FIX002",  # Line contains TODO
-    "ISC001",  # Messes with the formatter
     "PERF203", # Rarely useful
     "PLR09",   # Too many something (arg, statements, etc)
     "RUF012",  # Doesn't play well with Pydantic
diff --git a/libs/langchain_v1/pyproject.toml b/libs/langchain_v1/pyproject.toml
index 2eafe85ef2e..afe23b2c464 100644
--- a/libs/langchain_v1/pyproject.toml
+++ b/libs/langchain_v1/pyproject.toml
@@ -110,7 +110,6 @@ ignore = [
     "COM812",  # Messes with the formatter
     "CPY",     # No copyright
     "FIX002",  # Line contains TODO
-    "ISC001",  # Messes with the formatter
     "PERF203", # Rarely useful
     "PLR09",   # Too many something (arg, statements, etc)
     "RUF012",  # Doesn't play well with Pydantic
diff --git a/libs/standard-tests/pyproject.toml b/libs/standard-tests/pyproject.toml
index fe0aaa0da15..6b06a91930c 100644
--- a/libs/standard-tests/pyproject.toml
+++ b/libs/standard-tests/pyproject.toml
@@ -67,7 +67,6 @@ ignore = [
     "C90",     # McCabe complexity
     "COM812",  # Messes with the formatter
     "FIX002",  # Line contains TODO
-    "ISC001",  # Messes with the formatter
     "PERF203", # Rarely useful
     "PLR2004", # Magic numbers
     "PLR09",   # Too many something (arg, statements, etc)
diff --git a/libs/text-splitters/pyproject.toml b/libs/text-splitters/pyproject.toml
index 47d3cd645d0..81f39583a14 100644
--- a/libs/text-splitters/pyproject.toml
+++ b/libs/text-splitters/pyproject.toml
@@ -86,7 +86,6 @@ ignore = [
     "COM812",  # Messes with the formatter
     "CPY",     # No copyright
     "FIX002",  # Line contains TODO
-    "ISC001",  # Messes with the formatter
     "PERF203", # Rarely useful
     "PLR09",   # Too many something (arg, statements, etc)
     "RUF012",  # Doesn't play well with Pydantic