diff --git a/pyproject.toml b/pyproject.toml
index 07509d33..c5d9df85 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -59,7 +59,7 @@ dependencies = [
     "avro==1.12.2",
     "bokeh==3.8.2",
     "dill>=0.4.0,<1.0.0",
-    "elasticsearch9==9.1.0",
+    "elasticsearch9==9.5.1",
     "fhir.resources==8.3.0",
     "geocoder==1.38.1",
     "jsonpickle==4.1.1",
diff --git a/uv.lock b/uv.lock
index 1526545f..2c0433e4 100644
--- a/uv.lock
+++ b/uv.lock
@@ -17,6 +17,19 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/99/91/8acff4f5e50511b911bbccb72b8628a49c68ce14148cd9f6431094859a90/annotated_types-0.8.0-py3-none-any.whl", hash = "sha256:f072f4d804ea359e4eaf198b1af7a8b0943881a87f31bb764f8bf219bb9419e0", size = 13427, upload-time = "2026-07-23T20:16:12.938Z" },
 ]
 
+[[package]]
+name = "anyio"
+version = "4.15.1"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "idna" },
+    { name = "typing-extensions", marker = "python_full_version < '3.15'" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/a9/d2/f4d173e22df740bc37b1db102b386ba719b66e95b0f0d751f556b387e6d2/anyio-4.15.1.tar.gz", hash = "sha256:9f28306018cbd6d329e64a36d58256edff76dd996fe423bc957326e578b82a94", size = 276966, upload-time = "2026-09-05T10:42:39.44Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/12/b8/4bd346e22b28902df4d651910f5242c28d84e4a5c2435ca5c3f797ed7e2e/anyio-4.15.1-py3-none-any.whl", hash = "sha256:6152fdbbf9a77fdec97731721bebf7c4c44f7c29b424b0065826173efc7ed101", size = 132079, upload-time = "2026-09-05T10:42:37.923Z" },
+]
+
 [[package]]
 name = "asn1crypto"
 version = "1.5.1"
@@ -642,7 +655,7 @@ requires-dist = [
     { name = "avro", specifier = "==1.12.2" },
     { name = "bokeh", specifier = "==3.8.2" },
     { name = "dill", specifier = ">=0.4.0,<1.0.0" },
-    { name = "elasticsearch9", specifier = "==9.1.0" },
+    { name = "elasticsearch9", specifier = "==9.5.1" },
     { name = "fhir-resources", specifier = "==8.3.0" },
     { name = "geocoder", specifier = "==1.38.1" },
     { name = "jsonpickle", specifier = "==4.1.1" },
@@ -874,16 +887,18 @@ wheels = [
 
 [[package]]
 name = "elasticsearch9"
-version = "9.1.0"
+version = "9.5.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
+    { name = "anyio" },
     { name = "elastic-transport" },
     { name = "python-dateutil" },
+    { name = "sniffio" },
     { name = "typing-extensions" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/e7/2c/0d820895e442d68fdffe08bc307fb85a71fb745a8498f85e0ca21c483b3c/elasticsearch9-9.1.0.tar.gz", hash = "sha256:b8dee7900042cc8bb57181cf79c12b5db1446e671db5ea84705e8a96d3788496", size = 849013, upload-time = "2025-07-30T08:54:53.712Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/5e/76/429af6179c525797ff48e176f178a2ea5e5df3340edc5a3e487a896a9e23/elasticsearch9-9.5.1.tar.gz", hash = "sha256:0e204de09a86c5de95a7bc0e60f26ec5e0a365b234b35363f0050f7f1fcc9beb", size = 930599, upload-time = "2026-09-09T20:17:05.656Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/f2/3c/b27aebdac9f1f054f4b569dfc245074ab954387dd68c0b7e0a1b5368fd74/elasticsearch9-9.1.0-py3-none-any.whl", hash = "sha256:5281b447587e5440183db280f953e2f34993b8b38df6fb98e7cd66f99b7734d4", size = 929889, upload-time = "2025-07-30T08:54:50.353Z" },
+    { url = "https://files.pythonhosted.org/packages/62/1c/b0a5d65b9d3d7a66d714fd0befb3e772f6782f78a0e3eb7bba2c5835ceb2/elasticsearch9-9.5.1-py3-none-any.whl", hash = "sha256:2e49b0decd539cc23b48ac70a291b4ad3e4527a82730dc7eb1e495c332106d48", size = 1018725, upload-time = "2026-09-09T20:17:01.883Z" },
 ]
 
 [[package]]