diff --git a/python/wreq/tls.py b/python/wreq/tls.py
index c15901c1..b1662cad 100644
--- a/python/wreq/tls.py
+++ b/python/wreq/tls.py
@@ -124,6 +124,7 @@ class ExtensionType(Enum):
     NEXT_PROTO_NEG = auto()
     CHANNEL_ID = auto()
     RECORD_SIZE_LIMIT = auto()
+    TRUST_ANCHORS = auto()
 
 
 @final
@@ -420,6 +421,16 @@ class Params(TypedDict):
     Overrides the random AES hardware acceleration.
     """
 
+    grease_sigalgs_enabled: NotRequired[bool]
+    """
+    Whether the `signature_algorithms` extension includes a GREASE value.
+    """
+
+    trust_anchors: NotRequired[bytes]
+    """
+    Encoded Trust Anchor IDs sent in a TLS 1.3 ClientHello.
+    """
+
 
 @final
 class TlsOptions:
diff --git a/src/tls.rs b/src/tls.rs
index 991d9a7b..32b01c81 100644
--- a/src/tls.rs
+++ b/src/tls.rs
@@ -110,6 +110,7 @@ define_enum!(
     NEXT_PROTO_NEG,
     CHANNEL_ID,
     RECORD_SIZE_LIMIT,
+    TRUST_ANCHORS,
 );
 
 /// A builder for [`TlsOptions`].
@@ -215,6 +216,12 @@ struct Builder {
 
     /// Overrides the random AES hardware acceleration.
     random_aes_hw_override: Option<bool>,
+
+    /// Whether the `signature_algorithms` extension includes a GREASE value.
+    grease_sigalgs_enabled: Option<bool>,
+
+    /// Encoded Trust Anchor IDs sent in a TLS 1.3 ClientHello.
+    trust_anchors: Option<Vec<u8>>,
 }
 
 /// TLS connection configuration options.
@@ -382,6 +389,13 @@ impl TlsOptions {
                     params.random_aes_hw_override,
                     random_aes_hw_override
                 );
+                apply_option!(
+                    set_if_some,
+                    builder,
+                    params.grease_sigalgs_enabled,
+                    grease_sigalgs_enabled
+                );
+                apply_option!(set_if_some, builder, params.trust_anchors, trust_anchors);
             }
 
             Self(builder.build())
diff --git a/tests/tls_test.py b/tests/tls_test.py
index 2517deee..d7878b23 100644
--- a/tests/tls_test.py
+++ b/tests/tls_test.py
@@ -1,7 +1,7 @@
 import pytest
 import wreq
 from wreq.emulation import Emulation
-from wreq.tls import CertStore
+from wreq.tls import CertStore, ExtensionType, TlsOptions
 
 
 @pytest.mark.asyncio
@@ -49,3 +49,13 @@ async def test_alps_new_endpoint():
     async with resp:
         text = await resp.text()
         assert text is not None
+
+
+def test_tls_options_trust_anchors_and_grease_sigalgs():
+    opts = TlsOptions(grease_sigalgs_enabled=True, trust_anchors=b"")
+    assert opts is not None
+
+
+def test_extension_type_trust_anchors():
+    opts = TlsOptions(extension_permutation=[ExtensionType.TRUST_ANCHORS])
+    assert opts is not None