diff --git a/llama-index-integrations/vector_stores/llama-index-vector-stores-postgres/llama_index/vector_stores/postgres/base.py b/llama-index-integrations/vector_stores/llama-index-vector-stores-postgres/llama_index/vector_stores/postgres/base.py
index faa474aad5c914370c00bf2e1ae8fa39dc3e719c..e5cbb310b3d64589397a2046f57f4c721da9339f 100644
--- a/llama-index-integrations/vector_stores/llama-index-vector-stores-postgres/llama_index/vector_stores/postgres/base.py
+++ b/llama-index-integrations/vector_stores/llama-index-vector-stores-postgres/llama_index/vector_stores/postgres/base.py
@@ -392,11 +392,21 @@ class PGVectorStore(BasePydanticVectorStore):
                 f"'[\"{filter_.value}\"]'"
             )
         else:
-            return text(
-                f"metadata_->>'{filter_.key}' "
-                f"{self._to_postgres_operator(filter_.operator)} "
-                f"'{filter_.value}'"
-            )
+            # Check if value is a number. If so, cast the metadata value to a float
+            # This is necessary because the metadata is stored as a string
+            try:
+                return text(
+                    f"(metadata_->>'{filter_.key}')::float "
+                    f"{self._to_postgres_operator(filter_.operator)} "
+                    f"{float(filter_.value)}"
+                )
+            except ValueError:
+                # If not a number, then treat it as a string
+                return text(
+                    f"metadata_->>'{filter_.key}' "
+                    f"{self._to_postgres_operator(filter_.operator)} "
+                    f"'{filter_.value}'"
+                )
 
     def _recursively_apply_filters(self, filters: List[MetadataFilters]) -> Any:
         """
diff --git a/llama-index-integrations/vector_stores/llama-index-vector-stores-postgres/pyproject.toml b/llama-index-integrations/vector_stores/llama-index-vector-stores-postgres/pyproject.toml
index a605510d912d24b88c79eedbc2748831bee6d40e..6efae8f05f071a7f51bf786dee154af45bc3f9cf 100644
--- a/llama-index-integrations/vector_stores/llama-index-vector-stores-postgres/pyproject.toml
+++ b/llama-index-integrations/vector_stores/llama-index-vector-stores-postgres/pyproject.toml
@@ -27,7 +27,7 @@ exclude = ["**/BUILD"]
 license = "MIT"
 name = "llama-index-vector-stores-postgres"
 readme = "README.md"
-version = "0.1.4.post1"
+version = "0.1.5"
 
 [tool.poetry.dependencies]
 python = ">=3.8.1,<4.0"