diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 3fd67d6..d42d865 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -20,4 +20,6 @@ jobs:
         - name: Build
           run: cargo build
         - name: Run tests
-          run: cargo test --verbose
\ No newline at end of file
+          env:
+            PINECONE_API_KEY: ${{ secrets.PINECONE_API_KEY }}
+          run: cargo test --verbose
diff --git a/pinecone_sdk/src/config.rs b/pinecone_sdk/src/config.rs
index 9bfea0e..18b11a3 100644
--- a/pinecone_sdk/src/config.rs
+++ b/pinecone_sdk/src/config.rs
@@ -17,4 +17,4 @@ impl Config {
             source_tag,
         }
     }
-}
+}
\ No newline at end of file
diff --git a/pinecone_sdk/src/control/list_indexes.rs b/pinecone_sdk/src/control/list_indexes.rs
index 6b9c1ab..8ff707f 100644
--- a/pinecone_sdk/src/control/list_indexes.rs
+++ b/pinecone_sdk/src/control/list_indexes.rs
@@ -98,4 +98,4 @@ mod tests {
             Err(err) => panic!("Expected Ok, got Err: {:?}", err),
         }
     }
-}
+}
\ No newline at end of file
diff --git a/pinecone_sdk/src/control/mod.rs b/pinecone_sdk/src/control/mod.rs
index bca88fd..61b19f0 100644
--- a/pinecone_sdk/src/control/mod.rs
+++ b/pinecone_sdk/src/control/mod.rs
@@ -1,3 +1,3 @@
 mod list_indexes;
 
-pub use list_indexes::*;
+pub use list_indexes::*;
\ No newline at end of file
diff --git a/pinecone_sdk/src/lib.rs b/pinecone_sdk/src/lib.rs
index 68cf8b9..84c7bc3 100644
--- a/pinecone_sdk/src/lib.rs
+++ b/pinecone_sdk/src/lib.rs
@@ -1,4 +1,4 @@
 pub mod config;
 pub mod control;
 pub mod pinecone;
-pub mod utils;
+pub mod utils;
\ No newline at end of file
diff --git a/pinecone_sdk/src/pinecone.rs b/pinecone_sdk/src/pinecone.rs
index f3f3c5d..0305931 100644
--- a/pinecone_sdk/src/pinecone.rs
+++ b/pinecone_sdk/src/pinecone.rs
@@ -344,4 +344,4 @@ mod tests {
             mock_arg_headers.clone()
         );
     }
-}
+}
\ No newline at end of file
diff --git a/pinecone_sdk/src/utils/errors.rs b/pinecone_sdk/src/utils/errors.rs
index e97c306..69024d6 100644
--- a/pinecone_sdk/src/utils/errors.rs
+++ b/pinecone_sdk/src/utils/errors.rs
@@ -7,4 +7,4 @@ pub enum PineconeError {
 
     #[snafu(display("Failed to parse headers: {}", json_error))]
     InvalidHeadersError { json_error: serde_json::Error },
-}
+}
\ No newline at end of file
diff --git a/pinecone_sdk/src/utils/mod.rs b/pinecone_sdk/src/utils/mod.rs
index 1eaf948..8549526 100644
--- a/pinecone_sdk/src/utils/mod.rs
+++ b/pinecone_sdk/src/utils/mod.rs
@@ -1,2 +1,2 @@
 pub mod errors;
-pub mod user_agent;
+pub mod user_agent;
\ No newline at end of file
diff --git a/pinecone_sdk/tests/integration_test.rs b/pinecone_sdk/tests/integration_test.rs
new file mode 100644
index 0000000..ae970a9
--- /dev/null
+++ b/pinecone_sdk/tests/integration_test.rs
@@ -0,0 +1,9 @@
+use pinecone_sdk::pinecone::Pinecone;
+
+#[tokio::test]
+async fn test_list_serverless_index_env() {
+    let pinecone = Pinecone::new(None, None, None, None).unwrap();
+    let list_response = pinecone.list_indexes().await;
+
+    assert!(list_response.is_ok());
+}
\ No newline at end of file