diff --git a/pyproject.toml b/pyproject.toml
index e95c8039..9271bd8c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,7 @@ dependencies = [
     "aiosqlite==0.22.1",
     "beautifulsoup4==4.14.3",
     "censys==2.2.19",
-    "certifi==2026.4.22",
+    "certifi==2026.5.20",
     "dnspython==2.8.0",
     "fastapi==0.136.1",
     "lxml==6.1.0",
diff --git a/uv.lock b/uv.lock
index 95a83eef..141d17a4 100644
--- a/uv.lock
+++ b/uv.lock
@@ -293,11 +293,11 @@ wheels = [
 
 [[package]]
 name = "certifi"
-version = "2026.4.22"
+version = "2026.5.20"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/25/ee/6caf7a40c36a1220410afe15a1cc64993a1f864871f698c0f93acb72842a/certifi-2026.4.22.tar.gz", hash = "sha256:8d455352a37b71bf76a79caa83a3d6c25afee4a385d632127b6afb3963f1c580", size = 137077, upload-time = "2026-04-22T11:26:11.191Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/f3/ce/ee2ecad540810a79593028e88299baeae54d346cc7a0d94b6199988b89b1/certifi-2026.5.20.tar.gz", hash = "sha256:69dea482ab64caa7b9f6aba1c6bf48bb6a5448d1c0f1b17ab42ad8c763a5344d", size = 135422, upload-time = "2026-05-20T11:46:50.073Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/22/30/7cd8fdcdfbc5b869528b079bfb76dcdf6056b1a2097a662e5e8c04f42965/certifi-2026.4.22-py3-none-any.whl", hash = "sha256:3cb2210c8f88ba2318d29b0388d1023c8492ff72ecdde4ebdaddbb13a31b1c4a", size = 135707, upload-time = "2026-04-22T11:26:09.372Z" },
+    { url = "https://files.pythonhosted.org/packages/59/8c/57e832b7af6d7c5abe66eb3fbe3a3a32f4d11ea23a1aa7131371035be991/certifi-2026.5.20-py3-none-any.whl", hash = "sha256:3c52e209ba0a4ad7aebe60436a4ab349c39e1e602e8c134221e546902ad25897", size = 134134, upload-time = "2026-05-20T11:46:48.578Z" },
 ]
 
 [[package]]
@@ -1600,7 +1600,7 @@ requires-dist = [
     { name = "aiosqlite", specifier = "==0.22.1" },
     { name = "beautifulsoup4", specifier = "==4.14.3" },
     { name = "censys", specifier = "==2.2.19" },
-    { name = "certifi", specifier = "==2026.4.22" },
+    { name = "certifi", specifier = "==2026.5.20" },
     { name = "dnspython", specifier = "==2.8.0" },
     { name = "fastapi", specifier = "==0.136.1" },
     { name = "httpx", specifier = "==0.28.1" },