diff --git a/pyproject.toml b/pyproject.toml
index 96cd30ad7..f947289b8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,7 +36,7 @@ dependencies = [
     "pyyaml>=6.0.2,<7.0",
     "requests!=3.32.0",  # 3.32.0 breaks docker tests
     "rich>=13.7.0,<14.0",
-    "snowflake-connector-python>=3.12.2,<4.0",
+    "snowflake-connector-python>=3.12.2,<5.0",
     "snowflake-sqlalchemy>=1.6.1,<2.0",
     "structlog>=24.4.0,<25.0",
     # TODO: Restore broader version constraints after verifying compatibility
diff --git a/uv.lock b/uv.lock
index 42c018db6..f64ba179f 100644
--- a/uv.lock
+++ b/uv.lock
@@ -221,7 +221,7 @@ requires-dist = [
     { name = "pyyaml", specifier = ">=6.0.2,<7.0" },
     { name = "requests", specifier = "!=3.32.0" },
     { name = "rich", specifier = ">=13.7.0,<14.0" },
-    { name = "snowflake-connector-python", specifier = ">=3.12.2,<4.0" },
+    { name = "snowflake-connector-python", specifier = ">=3.12.2,<5.0" },
     { name = "snowflake-sqlalchemy", specifier = ">=1.6.1,<2.0" },
     { name = "sqlalchemy", specifier = "==2.0.43" },
     { name = "sqlalchemy-bigquery", specifier = "==1.12.0" },