diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 7caed1c..f4906fc 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -27,7 +27,7 @@ jobs:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: "3.14"
+          python-version: "3.15"
           architecture: "x64"
           cache: "pipenv"
           cache-dependency-path: Pipfile.lock
@@ -47,7 +47,7 @@ jobs:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: "3.14"
+          python-version: "3.15"
           architecture: "x64"
           cache: "pipenv"
           cache-dependency-path: Pipfile.lock
@@ -92,7 +92,7 @@ jobs:
         with:
           function-name: ${{ vars.LAMBDA_NAME }}
           package-type: Zip
-          runtime: python3.14
+          runtime: python3.15
           handler: handler.handler
           publish: false
           code-artifacts-dir: ${{ github.workspace }}/package
diff --git a/.github/workflows/terraform.yml b/.github/workflows/terraform.yml
index ca75807..db876b3 100644
--- a/.github/workflows/terraform.yml
+++ b/.github/workflows/terraform.yml
@@ -47,7 +47,7 @@ jobs:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: "3.14"
+          python-version: "3.15"
           architecture: "x64"
       - name: Install dependencies
         run: pip install -r requirements.txt
diff --git a/Pipfile b/Pipfile
index 68539e1..61ada7f 100644
--- a/Pipfile
+++ b/Pipfile
@@ -7,7 +7,7 @@ name = "pypi"
 venv_in_project = true
 
 [requires]
-python_version = "3.14"
+python_version = "3.15"
 
 [packages]
 feedparser = "==6.0.14"
diff --git a/Pipfile.lock b/Pipfile.lock
index 44874ca..e035f17 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,11 +1,11 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "6e2b765fafced5258aaa8a7685f701984dea1f269830e89fb4f7e2d13f07aa8f"
+            "sha256": "b161eb68cd38889ca4024807ad785ac1a4faa8081b43996659cd6c21912cfde0"
         },
         "pipfile-spec": 6,
         "requires": {
-            "python_version": "3.14"
+            "python_version": "3.15"
         },
         "sources": [
             {
@@ -87,11 +87,11 @@
         },
         "botocore": {
             "hashes": [
-                "sha256:ab9d16c6b4350aaa54ed28202dfa2998b2d735fdbf3247eb60af469d8d48a5b8",
-                "sha256:ee4f75cf3bdbb0da7912e089950e8112f692016539d939312c771499958e6cfd"
+                "sha256:44d5e80962ac6cb9e85af72667b77c9586451e3328ab0ce33195380767e213d8",
+                "sha256:f1f4c28cb2a096bf246d0bb24cbb1a01c5cb696ef499fa71b155adda7b94c90b"
             ],
             "markers": "python_version >= '3.10'",
-            "version": "==1.43.108"
+            "version": "==1.43.111"
         },
         "cachecontrol": {
             "extras": [
@@ -316,11 +316,11 @@
         },
         "filelock": {
             "hashes": [
-                "sha256:325ff22f358c18443b1fcdfa0a7aa3faec4b500c2807c554719da4567b533d31",
-                "sha256:733d9b6b153fc63672f86104324186818b6bbe9dd7db84e9bb9887b6a04a2775"
+                "sha256:2ce9818e3e2d8f284c1a964414447ef148d42a5fd5e2a477a7118e574b293ec1",
+                "sha256:ad7f724afef953e731b1cc39bcd3a09166d72ed7fcdf29e6e88b1c3235c6715d"
             ],
             "markers": "python_version >= '3.10'",
-            "version": "==4.0.8"
+            "version": "==4.1.0"
         },
         "flake8": {
             "hashes": [
@@ -543,11 +543,11 @@
         },
         "platformdirs": {
             "hashes": [
-                "sha256:080f3b39423b5abfca9a23d84c4e9795f54d395cd8459867a8ded44084fcd5f8",
-                "sha256:427fc0bb321ae0c5b037fa03238ca74820437be162e78b4848c4d4055b9b766c"
+                "sha256:1aa0b0d3f224c1f07c295121e312a5a24a180d6ae5a8425ea1784b3e3863e9c0",
+                "sha256:3dbcf4cd708f21cf876c4eaa90e58412bc4f033d87143f41b1493ff77c25b7e1"
             ],
-            "markers": "python_version >= '3.10'",
-            "version": "==4.12.3"
+            "markers": "python_version >= '3.11'",
+            "version": "==4.13.0"
         },
         "py-serializable": {
             "hashes": [
@@ -567,11 +567,11 @@
         },
         "pyflakes": {
             "hashes": [
-                "sha256:1559b701962c803eadeb9c215dbac279585367b73ac12e1f0c42868785e6caad",
-                "sha256:cb4e721195b96e1792f3dfaefa02fb36a4f6253e899bbe0793f8aef6ed0065ef"
+                "sha256:330ba92b8c1db2eb0b8f4068f6c58674e2649a99e334769aa50e3e9c5b11c23a",
+                "sha256:94762a3a5a343a79b28754f96c554bce057a592a4896907d73f0369fe824e053"
             ],
             "markers": "python_version >= '3.10'",
-            "version": "==4.0.1"
+            "version": "==4.0.3"
         },
         "pygments": {
             "hashes": [
@@ -686,56 +686,74 @@
         },
         "tomli": {
             "hashes": [
-                "sha256:01f520d4f53ef97964a240a035ec2a869fe1a37dde002b57ebc4417a27ccd853",
-                "sha256:0d85819802132122da43cb86656f8d1f8c6587d54ae7dcaf30e90533028b49fe",
-                "sha256:136443dbd7e1dee43c68ac2694fde36b2849865fa258d39bf822c10e8068eac5",
-                "sha256:1d8591993e228b0c930c4bb0db464bdad97b3289fb981255d6c9a41aedc84b2d",
-                "sha256:2190f2e9dd7508d2a90ded5ed369255980a1bcdd58e52f7fe24b8162bf9fedbd",
-                "sha256:2c1c351919aca02858f740c6d33adea0c5deea37f9ecca1cc1ef9e884a619d26",
-                "sha256:36d2bd2ad5fb9eaddba5226aa02c8ec3fa4f192631e347b3ed28186d43be6b54",
-                "sha256:3d48a93ee1c9b79c04bb38772ee1b64dcf18ff43085896ea460ca8dec96f35f6",
-                "sha256:47149d5bd38761ac8be13a84864bf0b7b70bc051806bc3669ab1cbc56216b23c",
-                "sha256:4ab97e64ccda8756376892c53a72bd1f964e519c77236368527f758fbc36a53a",
-                "sha256:4b605484e43cdc43f0954ddae319fb75f04cc10dd80d830540060ee7cd0243cd",
-                "sha256:504aa796fe0569bb43171066009ead363de03675276d2d121ac1a4572397870f",
-                "sha256:51529d40e3ca50046d7606fa99ce3956a617f9b36380da3b7f0dd3dd28e68cb5",
-                "sha256:52c8ef851d9a240f11a88c003eacb03c31fc1c9c4ec64a99a0f922b93874fda9",
-                "sha256:559db847dc486944896521f68d8190be1c9e719fced785720d2216fe7022b662",
-                "sha256:5a881ab208c0baf688221f8cecc5401bd291d67e38a1ac884d6736cbcd8247e9",
-                "sha256:5cb41aa38891e073ee49d55fbc7839cfdb2bc0e600add13874d048c94aadddd1",
-                "sha256:5e262d41726bc187e69af7825504c933b6794dc3fbd5945e41a79bb14c31f585",
-                "sha256:5ee18d9ebdb417e384b58fe414e8d6af9f4e7a0ae761519fb50f721de398dd4e",
-                "sha256:7008df2e7655c495dd12d2a4ad038ff878d4ca4b81fccaf82b714e07eae4402c",
-                "sha256:734e20b57ba95624ecf1841e72b53f6e186355e216e5412de414e3c51e5e3c41",
-                "sha256:7c7e1a961a0b2f2472c1ac5b69affa0ae1132c39adcb67aba98568702b9cc23f",
-                "sha256:7f86fd587c4ed9dd76f318225e7d9b29cfc5a9d43de44e5754db8d1128487085",
-                "sha256:7f94b27a62cfad8496c8d2513e1a222dd446f095fca8987fceef261225538a15",
-                "sha256:88dceee75c2c63af144e456745e10101eb67361050196b0b6af5d717254dddf7",
-                "sha256:8a650c2dbafa08d42e51ba0b62740dae4ecb9338eefa093aa5c78ceb546fcd5c",
-                "sha256:8d65a2fbf9d2f8352685bc1364177ee3923d6baf5e7f43ea4959d7d8bc326a36",
-                "sha256:96481a5786729fd470164b47cdb3e0e58062a496f455ee41b4403be77cb5a076",
-                "sha256:a120733b01c45e9a0c34aeef92bf0cf1d56cfe81ed9d47d562f9ed591a9828ac",
-                "sha256:b1d22e6e9387bf4739fbe23bfa80e93f6b0373a7f1b96c6227c32bef95a4d7a8",
-                "sha256:b8c198f8c1805dc42708689ed6864951fd2494f924149d3e4bce7710f8eb5232",
-                "sha256:c2541745709bad0264b7d4705ad453b76ccd191e64aa6f0fc66b69a293a45ece",
-                "sha256:c742f741d58a28940ce01d58f0ab2ea3ced8b12402f162f4d534dfe18ba1cd6a",
-                "sha256:c7f2c7f2b9ca6bdeef8f0fa897f8e05085923eb091721675170254cbc5b02897",
-                "sha256:d312ef37c91508b0ab2cee7da26ec0b3ed2f03ce12bd87a588d771ae15dcf82d",
-                "sha256:d4d8fe59808a54658fcc0160ecfb1b30f9089906c50b23bcb4c69eddc19ec2b4",
-                "sha256:da25dc3563bff5965356133435b757a795a17b17d01dbc0f42fb32447ddfd917",
-                "sha256:eab21f45c7f66c13f2a9e0e1535309cee140182a9cdae1e041d02e47291e8396",
-                "sha256:eb0dc4e38e6a1fd579e5d50369aa2e10acfc9cace504579b2faabb478e76941a",
-                "sha256:ec9bfaf3ad2df51ace80688143a6a4ebc09a248f6ff781a9945e51937008fcbc",
-                "sha256:ede3e6487c5ef5d28634ba3f31f989030ad6af71edfb0055cbbd14189ff240ba",
-                "sha256:f3c6818a1a86dd6dca7ddcaaf76947d5ba31aecc28cb1b67009a5877c9a64f3f",
-                "sha256:f758f1b9299d059cc3f6546ae2af89670cb1c4d48ea29c3cacc4fe7de3058257",
-                "sha256:f8f0fc26ec2cc2b965b7a3b87cd19c5c6b8c5e5f436b984e85f486d652285c30",
-                "sha256:fd0409a3653af6c147209d267a0e4243f0ae46b011aa978b1080359fddc9b6cf",
-                "sha256:ff18e6a727ee0ab0388507b89d1bc6a22b138d1e2fa56d1ad494586d61d2eae9",
-                "sha256:ff2983983d34813c1aeb0fa89091e76c3a22889ee83ab27c5eeb45100560c049"
+                "sha256:069435bd5480429b98c5e5afb02ab21c219b6f0064680671c6dc0d46817346ea",
+                "sha256:0dc598040da8d42cf20f0be588ed7004f46db12a0ac6c32e03a59dccedaaadcd",
+                "sha256:1245a6638fc4bb0a60af38a7d45413db34a13842027c77597c712c998c62fdf0",
+                "sha256:19b0dd8749f4ea2f112c5fcfb3c5248390c899d7e2e173f1d91abee1fa0ff391",
+                "sha256:1f4a40d03fb9f63424f0979855bdeaf44dd7696b8d59501822c10ed30ba532df",
+                "sha256:20aa36de8f2cf87237143bc1fa1aae8d6612c09118f4da21c6a684db5dd1f6f9",
+                "sha256:21e4cae4114aba25aa0d4f85cdf486d290fb35c0954d7bba536248da64d43066",
+                "sha256:22185fad8a1e622f064e78008018a0dd3323550dcb479cb7a1d296888d74024f",
+                "sha256:2419c2a189551987b59d80e63ec355671283336f41c6b9b89462df679c7d0c57",
+                "sha256:264507556cd8b8c8e7c6ee037cdf443a463f03f4c958e57195e3d369711b8ff6",
+                "sha256:32a7b79ac57a2e83670ce329ccf675798bc5a2094783a63676866b70503f2e2b",
+                "sha256:3f89d10c1ff6a38d992c27fc8a4816af71a909e08a40ec66934240b1e74347c3",
+                "sha256:463b16086865b97facd8d0b3fb4cb7c544e3f58d2a69dc3113d6db9653fdb043",
+                "sha256:49096930c8d886c9bbdab62d2d0d17ce823ddeea522309a190b36245d5b49e01",
+                "sha256:521345fd1f19d45b8df87657aaa38b6f2ca3800059fadf428e7ebf479a383646",
+                "sha256:57b1c3b01fab802e2899bc3d168dca320e14165e2fd9fd584760fb4ca5826859",
+                "sha256:5d8bac3d603c97e6854424e5b2b5b741bdbde387e09f162fb0446812b4a8362b",
+                "sha256:610b27d99f28ec5f191c7064a48f3ddb179a1fe6ca73d571483ae859f57b605e",
+                "sha256:61ea1ebe1e55a34ea8199cc8dbff398d35027b82271c8ac4802fd3a1fd5b1bcc",
+                "sha256:62fc1bc8eb03e3a9cadfca713d65614ed8e09d974a283295ffe3a831976b4dc5",
+                "sha256:6664b7ae7af7294256c53960a6103077f4914cec8ff98479c352f622c6f6b2f0",
+                "sha256:667e521b37a6c5ccaa044202c235b530f90177ffe2cd4a64ecc213c7dd535feb",
+                "sha256:69491c143d2fe063046e0301e62a810bed338fa4d1ce0fd870c27dc1e09b0d84",
+                "sha256:6cf74416bdc94ae458b14e37286c1073081850ac8459a00d0c5efef5d44294c6",
+                "sha256:6e95c7614e705bfe2b04b27aa124adec59752d15813df37e2156747cab3a006b",
+                "sha256:6f041843c4d3a37245c0c056fd955b186bf8b1fb85690cbe40b81230891dc34b",
+                "sha256:752e8b1aa6a4367ef8bf6a1a1e005540f7ed055ba36d7193796812ca5404eb52",
+                "sha256:75dbcde8751b0a960aa3de173aa5e894d590755c6d7758b7e774c06f1dc3cbdd",
+                "sha256:7ac2027d37c3afbdf4bdd377f2676f6f1d2122a5be1f1137b49dced590b37e75",
+                "sha256:7ad1ea345759240d6463efa0ed1c704402752e49aa21476620738d74d72d8aa1",
+                "sha256:86665cee9c4835b7a7f1e8ec2c719b5258d4dc782887aded5a8ae7352a96843b",
+                "sha256:8ff3a2ca028c7eee0c777f9a092038d0a594a9fa04e215f929a22c329e2cb142",
+                "sha256:91294a9fb94a75542f6e46e4a2ae709bd8d9b51134098cae5cf3bea5478b6d03",
+                "sha256:943276cf269e0071948d9ff697159c1735e623c1151d88abb09b74659ef0cbea",
+                "sha256:96243987194634bd411066ce40c952e108f86af04db533ecd8ac3ff2a85b1885",
+                "sha256:984012f71908165449a951de2050d52f276bfe3aa5d5f570f63ddad814370374",
+                "sha256:9b03d7dc168353b4132965bde20feceabaa470e570c6f59660dfae59b1f9eeb3",
+                "sha256:9dbb18c1cfb2f6517942fc9314437f66aa06d94436ffb1f06102ef3572f35276",
+                "sha256:9ebf8d19b17bd0daeb7b7dec81a946a439b753942fd0210d6e96c532249eea6b",
+                "sha256:a525685c2f97da40762b8695eb7aa0af4c8344ca1905c73e4e29cb04d34607dc",
+                "sha256:abdbf6313b8d9efe157edeb7ab6eae4de064b1300ad31abf73755154b30abe68",
+                "sha256:b69564772b5c8f22ea5f498dff08cfa825045b4d4c4400529000bdf818aa3b2a",
+                "sha256:b8ade5023067f99fe72b88accd30d0ea05a158e9e32a11f124e731ea9695313f",
+                "sha256:bbaefc84548d754be821bba7c4141c4787dda182f9e77f2f87b71213529efa7b",
+                "sha256:bd05de8c1698f8413dd7d869492693a0bf2211543b787ac78cd5e7536af1a6d7",
+                "sha256:bf0b5e8e0f68ebb494356e577c06c139161efd8d3b9050f93b39b7c26cc54ff0",
+                "sha256:c414be4ed9d3cac80c42e348fa5a956117d1a48227f48026e31f59cb4a7671eb",
+                "sha256:c47300f9bf791808f77d82747691c4bb09cb14bdf3060cca99b42cdc4361d5a7",
+                "sha256:c4dc1c1781f2f716de763d1e9a7b34c6a894e167e291c7c5d16c72f7a9538545",
+                "sha256:c804ae44fe7b4bab5da295e4f980a1ff04670bca9d23fe0a4e887e08ebd741a8",
+                "sha256:cfac177ebd6236003846ea339981f71457cb6eb748f23381eb257e45092e3980",
+                "sha256:d2ba24db8a9376921b5e87b4762b9adb0f3f1deaea68f2b8b0bb2c11efb9c3e7",
+                "sha256:d3182ee2d887e507bd67319a0a61105d1dd33facc111329559a233b772c1a105",
+                "sha256:d747252933c8a65ef6bd8da0fbb7ce28a90eb6119d8cd00772cd528aa07b68d5",
+                "sha256:d7e369fd63331746182360977b1892bfc215476a30d61612d732425311639f56",
+                "sha256:e12bbcd32897272fb05929110362ae9ff4c1b9bb26bd9e971e71dcd3275b4c3d",
+                "sha256:e7ad033e27a516a233bea839cdb77b80146facb3b4f40bf02cd0cac165cdd5c2",
+                "sha256:e9e15b4a6c7dd6b85b5fbab29488a73f1f70de516942308daa266bf0e0aeb0d4",
+                "sha256:ed53f7e89bb04f6d9e8e7799112360b0c4d5cbff067de0814c98c37c39b920f7",
+                "sha256:eff8babca5a7999bc137acbc7482a8b7e17ffca5075ab41f5d770ab408c7bfef",
+                "sha256:f15e3e0b835a6d68b10c86bf80a3149780498d6911c93c3ffd1861d19f9200f1",
+                "sha256:f3fcbc57b1791fa6cbe5d8434179d51de12be1a4811469529f47f6e7487a2571",
+                "sha256:f4b653094e18f9031102d3a1da5c729c8f222d85225b18037dac621695e46e1a",
+                "sha256:f79203b3965b4000e91808aaa7c040206093f2b8bf86f455982f2274c9ccf442",
+                "sha256:fd4dc129784e0c5335bd4e61dfcc4487499a013419e655cf2da1d091b7e0efdc"
             ],
             "markers": "python_version >= '3.8'",
-            "version": "==2.4.1"
+            "version": "==2.5.0"
         },
         "tomli-w": {
             "hashes": [
diff --git a/terraform/lambda.tf b/terraform/lambda.tf
index 2b452ef..2c9ca6e 100644
--- a/terraform/lambda.tf
+++ b/terraform/lambda.tf
@@ -2,7 +2,7 @@ resource "aws_lambda_function" "rss_handler" {
   function_name = var.lambda_name
   role          = aws_iam_role.lambda_role.arn
   handler       = "handler.handler"
-  runtime       = "python3.14"
+  runtime       = "python3.15"
   architectures = ["x86_64"]
   memory_size   = 256
   timeout       = 30