diff --git a/bindings/python/.evergreen/test.sh b/bindings/python/.evergreen/test.sh
index 0c2f56dca..52344758d 100755
--- a/bindings/python/.evergreen/test.sh
+++ b/bindings/python/.evergreen/test.sh
@@ -95,6 +95,6 @@ EXPECTED="pkg:github/mongodb/libmongocrypt@$LIBMONGOCRYPT_VERSION"
 if grep -q $EXPECTED sbom.json; then
   echo "SBOM is up to date!"
 else
-  echo "SBOM is out of date! Run the \"update-sbom.sh\" script."
+  echo "SBOM is out of date! Run the \"scripts/update-version.sh\" script."
   exit 1
 fi
diff --git a/bindings/python/CHANGELOG.rst b/bindings/python/CHANGELOG.rst
index a70c34d22..c99bc6102 100644
--- a/bindings/python/CHANGELOG.rst
+++ b/bindings/python/CHANGELOG.rst
@@ -1,6 +1,18 @@
 Changelog
 =========
 
+Changes in Version 1.19.0
+-------------------------
+
+- Bundle libmongocrypt 1.20.2 in release wheels.
+- Renamed the ``text_opts`` parameter of ``ExplicitEncryptOpts`` and
+  ``ExplicitEncrypter.encrypt`` to ``string_opts``, matching the "string"
+  algorithm it configures. This is a breaking change.
+- The "textPreview" algorithm has been removed. Use "string" instead.
+- The "prefixPreview", "suffixPreview", and "substringPreview" query types are
+  now deprecated aliases of "prefix", "suffix", and "substring". Prefer the new
+  names, as a future release removes the aliases.
+
 Changes in Version 1.18.1
 -------------------------
 
diff --git a/bindings/python/pymongocrypt/asynchronous/explicit_encrypter.py b/bindings/python/pymongocrypt/asynchronous/explicit_encrypter.py
index 33abd2f09..6ffc376d0 100644
--- a/bindings/python/pymongocrypt/asynchronous/explicit_encrypter.py
+++ b/bindings/python/pymongocrypt/asynchronous/explicit_encrypter.py
@@ -93,7 +93,7 @@ async def encrypt(
         contention_factor=None,
         range_opts=None,
         is_expression=False,
-        text_opts=None,
+        string_opts=None,
     ):
         """Encrypts a BSON value.
 
@@ -115,8 +115,8 @@ async def encrypt(
             with the "range" algorithm encoded as a BSON document.
           - `is_expression` (boolean): True if this is an encryptExpression()
             context. Defaults to False.
-          - `text_opts` (bytes): Options for explicit encryption
-            with the "textPreview" algorithm encoded as a BSON document.
+          - `string_opts` (bytes): Options for explicit encryption
+            with the "string" algorithm encoded as a BSON document.
 
         :Returns:
           The encrypted BSON value.
@@ -127,6 +127,8 @@ async def encrypt(
            Added the `range_opts` and `is_expression` parameters.
         .. versionchanged:: 1.16
            Added the `text_opts` parameter.
+        .. versionchanged:: 1.19
+           Renamed the `text_opts` parameter to `string_opts`.
         """
         # CDRIVER-3275 key_alt_name needs to be wrapped in a bson document.
         if key_alt_name is not None:
@@ -139,7 +141,7 @@ async def encrypt(
             contention_factor,
             range_opts,
             is_expression,
-            text_opts,
+            string_opts,
         )
         with self.mongocrypt.explicit_encryption_context(value, opts) as ctx:
             return await run_state_machine(ctx, self.callback)
diff --git a/bindings/python/pymongocrypt/mongocrypt.py b/bindings/python/pymongocrypt/mongocrypt.py
index 8202e1959..a0e1da6cc 100644
--- a/bindings/python/pymongocrypt/mongocrypt.py
+++ b/bindings/python/pymongocrypt/mongocrypt.py
@@ -501,9 +501,11 @@ def __init__(self, ctx, kms_providers, value, opts):
                     ):
                         self._raise_from_status()
 
-            if opts.text_opts is not None:
-                with MongoCryptBinaryIn(opts.text_opts) as text_opts:
-                    if not lib.mongocrypt_ctx_setopt_algorithm_text(ctx, text_opts.bin):
+            if opts.string_opts is not None:
+                with MongoCryptBinaryIn(opts.string_opts) as string_opts:
+                    if not lib.mongocrypt_ctx_setopt_algorithm_text(
+                        ctx, string_opts.bin
+                    ):
                         self._raise_from_status()
 
             with MongoCryptBinaryIn(value) as binary:
diff --git a/bindings/python/pymongocrypt/options.py b/bindings/python/pymongocrypt/options.py
index f61372f23..b275d929a 100644
--- a/bindings/python/pymongocrypt/options.py
+++ b/bindings/python/pymongocrypt/options.py
@@ -170,7 +170,7 @@ def __init__(
         contention_factor=None,
         range_opts=None,
         is_expression=False,
-        text_opts=None,
+        string_opts=None,
     ):
         """Options for explicit encryption.
 
@@ -187,8 +187,8 @@ def __init__(
             with the "range" algorithm encoded as a BSON document.
           - `is_expression` (boolean): True if this is an encryptExpression()
             context. Defaults to False.
-          - `text_opts` (bytes): Options for explicit encryption
-            with the "textPreview" algorithm encoded as a BSON document.
+          - `string_opts` (bytes): Options for explicit encryption
+            with the "string" algorithm encoded as a BSON document.
 
         .. versionchanged:: 1.3
            Added the `query_type` and `contention_factor` parameters.
@@ -196,6 +196,8 @@ def __init__(
            Added the `range_opts` and `is_expression` parameters.
         .. versionchanged:: 1.16
            Added the `text_opts` parameter.
+        .. versionchanged:: 1.19
+           Renamed the `text_opts` parameter to `string_opts`.
         """
         self.algorithm = algorithm
         self.key_id = key_id
@@ -217,11 +219,11 @@ def __init__(
             )
         self.range_opts = range_opts
         self.is_expression = is_expression
-        if text_opts is not None and not isinstance(text_opts, bytes):
+        if string_opts is not None and not isinstance(string_opts, bytes):
             raise TypeError(
-                f"text_opts must be an bytes or None, not: {type(text_opts)}"
+                f"string_opts must be an bytes or None, not: {type(string_opts)}"
             )
-        self.text_opts = text_opts
+        self.string_opts = string_opts
 
 
 class DataKeyOpts:
diff --git a/bindings/python/pymongocrypt/synchronous/explicit_encrypter.py b/bindings/python/pymongocrypt/synchronous/explicit_encrypter.py
index 846ee647f..e20686d54 100644
--- a/bindings/python/pymongocrypt/synchronous/explicit_encrypter.py
+++ b/bindings/python/pymongocrypt/synchronous/explicit_encrypter.py
@@ -93,7 +93,7 @@ def encrypt(
         contention_factor=None,
         range_opts=None,
         is_expression=False,
-        text_opts=None,
+        string_opts=None,
     ):
         """Encrypts a BSON value.
 
@@ -115,8 +115,8 @@ def encrypt(
             with the "range" algorithm encoded as a BSON document.
           - `is_expression` (boolean): True if this is an encryptExpression()
             context. Defaults to False.
-          - `text_opts` (bytes): Options for explicit encryption
-            with the "textPreview" algorithm encoded as a BSON document.
+          - `string_opts` (bytes): Options for explicit encryption
+            with the "string" algorithm encoded as a BSON document.
 
         :Returns:
           The encrypted BSON value.
@@ -127,6 +127,8 @@ def encrypt(
            Added the `range_opts` and `is_expression` parameters.
         .. versionchanged:: 1.16
            Added the `text_opts` parameter.
+        .. versionchanged:: 1.19
+           Renamed the `text_opts` parameter to `string_opts`.
         """
         # CDRIVER-3275 key_alt_name needs to be wrapped in a bson document.
         if key_alt_name is not None:
@@ -139,7 +141,7 @@ def encrypt(
             contention_factor,
             range_opts,
             is_expression,
-            text_opts,
+            string_opts,
         )
         with self.mongocrypt.explicit_encryption_context(value, opts) as ctx:
             return run_state_machine(ctx, self.callback)
diff --git a/bindings/python/pymongocrypt/version.py b/bindings/python/pymongocrypt/version.py
index 326bfbfde..1e35ca4a5 100644
--- a/bindings/python/pymongocrypt/version.py
+++ b/bindings/python/pymongocrypt/version.py
@@ -12,6 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.18.2.dev0"
+__version__ = "1.19.0.dev0"
 
 _MIN_LIBMONGOCRYPT_VERSION = "1.8.0"
diff --git a/bindings/python/sbom.json b/bindings/python/sbom.json
index 0b2bf5cc3..be797eb39 100644
--- a/bindings/python/sbom.json
+++ b/bindings/python/sbom.json
@@ -1,31 +1,31 @@
 {
   "components": [
     {
-      "bom-ref": "pkg:github/mongodb/libmongocrypt@1.20.0",
+      "bom-ref": "pkg:github/mongodb/libmongocrypt@1.20.2",
       "externalReferences": [
         {
           "type": "distribution",
-          "url": "https://github.com/mongodb/libmongocrypt/archive/1.20.0.tar.gz"
+          "url": "https://github.com/mongodb/libmongocrypt/archive/1.20.2.tar.gz"
         },
         {
           "type": "website",
-          "url": "https://github.com/mongodb/libmongocrypt/tree/1.20.0"
+          "url": "https://github.com/mongodb/libmongocrypt/tree/1.20.2"
         }
       ],
       "group": "mongodb",
       "name": "libmongocrypt",
-      "purl": "pkg:github/mongodb/libmongocrypt@1.20.0",
+      "purl": "pkg:github/mongodb/libmongocrypt@1.20.2",
       "type": "library",
-      "version": "1.20.0"
+      "version": "1.20.2"
     }
   ],
   "dependencies": [
     {
-      "ref": "pkg:github/mongodb/libmongocrypt@1.20.0"
+      "ref": "pkg:github/mongodb/libmongocrypt@1.20.2"
     }
   ],
   "metadata": {
-    "timestamp": "2026-06-30T18:17:42.887189+00:00",
+    "timestamp": "2026-08-14T19:41:24.430909+00:00",
     "tools": [
       {
         "externalReferences": [
diff --git a/bindings/python/scripts/libmongocrypt-version.txt b/bindings/python/scripts/libmongocrypt-version.txt
index 398935591..769e37e15 100644
--- a/bindings/python/scripts/libmongocrypt-version.txt
+++ b/bindings/python/scripts/libmongocrypt-version.txt
@@ -1 +1 @@
-1.20.0
+1.20.2
diff --git a/bindings/python/test/test_mongocrypt.py b/bindings/python/test/test_mongocrypt.py
index c49f18b3b..1d5f51162 100644
--- a/bindings/python/test/test_mongocrypt.py
+++ b/bindings/python/test/test_mongocrypt.py
@@ -1025,7 +1025,7 @@ async def test_text_query(self):
             )
             self.addCleanup(encrypter.close)
 
-            text_opts = bson_data("fle2-text-search/textopts.json")
+            string_opts = bson_data("fle2-text-search/textopts.json")
             expected = bson_data("fle2-text-search/encrypted-payload.json")
             value = bson.encode({"v": "foo"})
             encrypted = await encrypter.encrypt(
@@ -1034,10 +1034,68 @@ async def test_text_query(self):
                 key_id=key_id,
                 query_type="suffix",
                 contention_factor=0,
-                text_opts=text_opts,
+                string_opts=string_opts,
             )
             self.assertEqual(encrypted, expected)
 
+        async def test_textPreview_query_fails(self):
+            key_path = "keys/ABCDEFAB123498761234123456789012-local-document.json"
+            key_id = json_data(key_path)["_id"]
+            encrypter = AsyncExplicitEncrypter(
+                MockAsyncCallback(
+                    key_docs=[bson_data(key_path)],
+                    kms_reply=http_data("kms-reply.txt"),
+                ),
+                self.mongo_crypt_opts(),
+            )
+            self.addCleanup(encrypter.close)
+
+            with self.assertRaisesRegex(
+                MongoCryptError,
+                "Algorithm 'textPreview' is deprecated, please use 'string'",
+            ):
+                await encrypter.encrypt(
+                    bson.encode({"v": "foo"}),
+                    "textPreview",
+                    key_id=key_id,
+                    query_type="suffix",
+                    contention_factor=0,
+                    string_opts=bson_data("fle2-text-search/textopts.json"),
+                )
+
+        async def test_deprecated_preview_query_types(self):
+            # The "*Preview" query types remain as aliases to the GA names.
+            # PYTHON-5959 drops them.
+            key_path = "keys/ABCDEFAB123498761234123456789012-local-document.json"
+            key_id = json_data(key_path)["_id"]
+            encrypter = AsyncExplicitEncrypter(
+                MockAsyncCallback(
+                    key_docs=[bson_data(key_path)], kms_reply=http_data("kms-reply.txt")
+                ),
+                self.mongo_crypt_opts(),
+            )
+            self.addCleanup(encrypter.close)
+
+            string_opts = bson_data("fle2-text-search/textopts.json")
+            value = bson.encode({"v": "foo"})
+
+            async def encrypt(query_type):
+                return await encrypter.encrypt(
+                    value,
+                    "string",
+                    key_id=key_id,
+                    query_type=query_type,
+                    contention_factor=0,
+                    string_opts=string_opts,
+                )
+
+            for query_type in ["prefix", "suffix", "substring"]:
+                with self.subTest(query_type=query_type):
+                    self.assertEqual(
+                        await encrypt(f"{query_type}Preview"),
+                        await encrypt(query_type),
+                    )
+
 
 class TestNeedKMSAzureCredentials(unittest.TestCase):
     maxDiff = None
@@ -1495,7 +1553,7 @@ def test_text_query(self):
         )
         self.addCleanup(encrypter.close)
 
-        text_opts = bson_data("fle2-text-search/textopts.json")
+        string_opts = bson_data("fle2-text-search/textopts.json")
         expected = bson_data("fle2-text-search/encrypted-payload.json")
         value = bson.encode({"v": "foo"})
         encrypted = encrypter.encrypt(
@@ -1504,10 +1562,64 @@ def test_text_query(self):
             key_id=key_id,
             query_type="suffix",
             contention_factor=0,
-            text_opts=text_opts,
+            string_opts=string_opts,
         )
         self.assertEqual(encrypted, expected)
 
+    def test_textPreview_query_fails(self):
+        key_path = "keys/ABCDEFAB123498761234123456789012-local-document.json"
+        key_id = json_data(key_path)["_id"]
+        encrypter = ExplicitEncrypter(
+            MockCallback(
+                key_docs=[bson_data(key_path)], kms_reply=http_data("kms-reply.txt")
+            ),
+            self.mongo_crypt_opts(),
+        )
+        self.addCleanup(encrypter.close)
+
+        with self.assertRaisesRegex(
+            MongoCryptError,
+            "Algorithm 'textPreview' is deprecated, please use 'string'",
+        ):
+            encrypter.encrypt(
+                bson.encode({"v": "foo"}),
+                "textPreview",
+                key_id=key_id,
+                query_type="suffix",
+                contention_factor=0,
+                string_opts=bson_data("fle2-text-search/textopts.json"),
+            )
+
+    def test_deprecated_preview_query_types(self):
+        # The "*Preview" query types remain as aliases to the GA names.
+        # PYTHON-5959 drops them.
+        key_path = "keys/ABCDEFAB123498761234123456789012-local-document.json"
+        key_id = json_data(key_path)["_id"]
+        encrypter = ExplicitEncrypter(
+            MockCallback(
+                key_docs=[bson_data(key_path)], kms_reply=http_data("kms-reply.txt")
+            ),
+            self.mongo_crypt_opts(),
+        )
+        self.addCleanup(encrypter.close)
+
+        string_opts = bson_data("fle2-text-search/textopts.json")
+        value = bson.encode({"v": "foo"})
+
+        def encrypt(query_type):
+            return encrypter.encrypt(
+                value,
+                "string",
+                key_id=key_id,
+                query_type=query_type,
+                contention_factor=0,
+                string_opts=string_opts,
+            )
+
+        for query_type in ["prefix", "suffix", "substring"]:
+            with self.subTest(query_type=query_type):
+                self.assertEqual(encrypt(f"{query_type}Preview"), encrypt(query_type))
+
 
 def read(filename, **kwargs):
     with open(os.path.join(DATA_DIR, filename), **kwargs) as fp: