diff --git a/backend/poetry.lock b/backend/poetry.lock
index 51a7171..ca5b200 100644
--- a/backend/poetry.lock
+++ b/backend/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.3.4 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.1.4 and should not be changed by hand.
 
 [[package]]
 name = "aiohappyeyeballs"
@@ -1392,11 +1392,11 @@ files = [
 ]
 
 [package.dependencies]
-google-api-core = ">=1.31.6,<2.0.dev0 || >2.3.0,<3.0.0.dev0"
-google-auth = ">=1.25.0,<3.0.dev0"
+google-api-core = ">=1.31.6,<2.0.dev0 || >2.3.0,<3.0.0dev"
+google-auth = ">=1.25.0,<3.0dev"
 
 [package.extras]
-grpc = ["grpcio (>=1.38.0,<2.0.dev0)", "grpcio-status (>=1.38.0,<2.0.dev0)"]
+grpc = ["grpcio (>=1.38.0,<2.0dev)", "grpcio-status (>=1.38.0,<2.0.dev0)"]
 
 [[package]]
 name = "google-cloud-secret-manager"
@@ -1433,37 +1433,41 @@ files = [
 ]
 
 [package.dependencies]
-google-api-core = ">=2.15.0,<3.0.0.dev0"
-google-auth = ">=2.26.1,<3.0.dev0"
-google-cloud-core = ">=2.3.0,<3.0.dev0"
-google-crc32c = ">=1.0,<2.0.dev0"
+google-api-core = ">=2.15.0,<3.0.0dev"
+google-auth = ">=2.26.1,<3.0dev"
+google-cloud-core = ">=2.3.0,<3.0dev"
+google-crc32c = ">=1.0,<2.0dev"
 google-resumable-media = ">=2.7.2"
-requests = ">=2.18.0,<3.0.0.dev0"
+requests = ">=2.18.0,<3.0.0dev"
 
 [package.extras]
-protobuf = ["protobuf (<6.0.0.dev0)"]
+protobuf = ["protobuf (<6.0.0dev)"]
 tracing = ["opentelemetry-api (>=1.1.0)"]
 
 [[package]]
 name = "google-cloud-texttospeech"
-version = "2.27.0"
+version = "2.36.0"
 description = "Google Cloud Texttospeech API client library"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.9"
 groups = ["main"]
 files = [
-    {file = "google_cloud_texttospeech-2.27.0-py3-none-any.whl", hash = "sha256:0f7c5fe05281beb6d005ea191f61c913085e8439e5ffd2d5d21e29d106150b54"},
-    {file = "google_cloud_texttospeech-2.27.0.tar.gz", hash = "sha256:94a382c95b7cc58efd2505a24c2968e2614fc6bdf9d76fb9a819d4ed29ae188e"},
+    {file = "google_cloud_texttospeech-2.36.0-py3-none-any.whl", hash = "sha256:03f76162543e9d77ecbab823c1cc3728c42ef40547353bcfdbd9ac0e71cb8121"},
+    {file = "google_cloud_texttospeech-2.36.0.tar.gz", hash = "sha256:6c605af7e4774c1bac99fcaaf4538f152b10bba7738a23f42184557f444dc6b7"},
 ]
 
 [package.dependencies]
-google-api-core = {version = ">=1.34.1,<2.0.dev0 || >=2.11.dev0,<3.0.0", extras = ["grpc"]}
+google-api-core = {version = ">=2.11.0,<3.0.0", extras = ["grpc"]}
 google-auth = ">=2.14.1,<2.24.0 || >2.24.0,<2.25.0 || >2.25.0,<3.0.0"
+grpcio = [
+    {version = ">=1.75.1,<2.0.0", markers = "python_version >= \"3.14\""},
+    {version = ">=1.33.2,<2.0.0", markers = "python_version < \"3.14\""},
+]
 proto-plus = [
     {version = ">=1.25.0,<2.0.0", markers = "python_version >= \"3.13\""},
-    {version = ">=1.22.3,<2.0.0"},
+    {version = ">=1.22.3,<2.0.0", markers = "python_version < \"3.13\""},
 ]
-protobuf = ">=3.20.2,<4.21.0 || >4.21.0,<4.21.1 || >4.21.1,<4.21.2 || >4.21.2,<4.21.3 || >4.21.3,<4.21.4 || >4.21.4,<4.21.5 || >4.21.5,<7.0.0"
+protobuf = ">=4.25.8,<8.0.0"
 
 [[package]]
 name = "google-cloud-trace"
@@ -1505,7 +1509,7 @@ google-cloud-core = ">=1.4.4,<3.0.0"
 grpc-google-iam-v1 = ">=0.14.0,<1.0.0"
 proto-plus = [
     {version = ">=1.25.0,<2.0.0", markers = "python_version >= \"3.13\""},
-    {version = ">=1.22.3,<2.0.0", markers = "python_version < \"3.13\""},
+    {version = ">=1.22.3,<2.0.0"},
 ]
 protobuf = ">=3.20.2,<4.21.0 || >4.21.0,<4.21.1 || >4.21.1,<4.21.2 || >4.21.2,<4.21.3 || >4.21.3,<4.21.4 || >4.21.4,<4.21.5 || >4.21.5,<7.0.0"
 
@@ -1597,11 +1601,11 @@ files = [
 ]
 
 [package.dependencies]
-google-crc32c = ">=1.0,<2.0.dev0"
+google-crc32c = ">=1.0,<2.0dev"
 
 [package.extras]
-aiohttp = ["aiohttp (>=3.6.2,<4.0.0.dev0)", "google-auth (>=1.22.0,<2.0.dev0)"]
-requests = ["requests (>=2.18.0,<3.0.0.dev0)"]
+aiohttp = ["aiohttp (>=3.6.2,<4.0.0dev)", "google-auth (>=1.22.0,<2.0dev)"]
+requests = ["requests (>=2.18.0,<3.0.0dev)"]
 
 [[package]]
 name = "googleapis-common-protos"
@@ -1646,6 +1650,7 @@ description = "HTTP/2-based RPC framework"
 optional = false
 python-versions = ">=3.9"
 groups = ["main"]
+markers = "python_version <= \"3.13\""
 files = [
     {file = "grpcio-1.74.0-cp310-cp310-linux_armv7l.whl", hash = "sha256:85bd5cdf4ed7b2d6438871adf6afff9af7096486fcf51818a81b77ef4dd30907"},
     {file = "grpcio-1.74.0-cp310-cp310-macosx_11_0_universal2.whl", hash = "sha256:68c8ebcca945efff9d86d8d6d7bfb0841cf0071024417e2d7f45c5e46b5b08eb"},
@@ -1703,6 +1708,84 @@ files = [
 [package.extras]
 protobuf = ["grpcio-tools (>=1.74.0)"]
 
+[[package]]
+name = "grpcio"
+version = "1.80.0"
+description = "HTTP/2-based RPC framework"
+optional = false
+python-versions = ">=3.9"
+groups = ["main"]
+markers = "python_version >= \"3.14\""
+files = [
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+    {file = "grpcio-1.80.0-cp310-cp310-macosx_11_0_universal2.whl", hash = "sha256:7b641fc3f1dc647bfd80bd713addc68f6d145956f64677e56d9ebafc0bd72388"},
+    {file = "grpcio-1.80.0-cp310-cp310-manylinux2014_aarch64.manylinux_2_17_aarch64.whl", hash = "sha256:33eb763f18f006dc7fee1e69831d38d23f5eccd15b2e0f92a13ee1d9242e5e02"},
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+    {file = "grpcio-1.80.0-cp39-cp39-manylinux2014_i686.manylinux_2_17_i686.whl", hash = "sha256:1b97cd29a8eda100b559b455331c487a80915b6ea6bd91cf3e89836c4ee8d957"},
+    {file = "grpcio-1.80.0-cp39-cp39-manylinux2014_x86_64.manylinux_2_17_x86_64.whl", hash = "sha256:bac1d573dfa84ce59a5547073e28fa7326d53352adda6912e362da0b917fcef4"},
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+    {file = "grpcio-1.80.0-cp39-cp39-musllinux_1_2_x86_64.whl", hash = "sha256:deb10a1528473c11f72a0939eed36d83e847d7cbb63e8cc5611fb7a912d38614"},
+    {file = "grpcio-1.80.0-cp39-cp39-win32.whl", hash = "sha256:627fb7312171cdc52828bd6fac8d7028ff2a64b89f1957b6f3416caa2218d141"},
+    {file = "grpcio-1.80.0-cp39-cp39-win_amd64.whl", hash = "sha256:05d55e1798756282cddd52d56c896b3e7d673e3a8798c2f1cd05ba249a3bb4de"},
+    {file = "grpcio-1.80.0.tar.gz", hash = "sha256:29aca15edd0688c22ba01d7cc01cb000d72b2033f4a3c72a81a19b56fd143257"},
+]
+
+[package.dependencies]
+typing-extensions = ">=4.12,<5.0"
+
+[package.extras]
+protobuf = ["grpcio-tools (>=1.80.0)"]
+
 [[package]]
 name = "grpcio-status"
 version = "1.62.3"
@@ -2637,7 +2720,7 @@ files = [
 [package.dependencies]
 google-cloud-trace = ">=1.1,<2.0"
 opentelemetry-api = ">=1.0,<2.0"
-opentelemetry-resourcedetector-gcp = ">=1.5.0.dev0,<2.dev0"
+opentelemetry-resourcedetector-gcp = ">=1.5.0dev0,<2.dev0"
 opentelemetry-sdk = ">=1.0,<2.0"
 
 [[package]]
diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index d472f91..b1f33b0 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -18,7 +18,7 @@ redis = "^5.0.1"
 celery = {extras = ["redis"], version = "^5.3.4"}
 google-cloud-storage = "^2.10.0"
 google-cloud-translate = "^3.12.1"
-google-cloud-texttospeech = "^2.16.3"
+google-cloud-texttospeech = "^2.36.0"
 google-cloud-secret-manager = "^2.18.1"
 google-genai = "^1.56.0"
 python-jose = {extras = ["cryptography"], version = "^3.3.0"}