diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ab4bcb537..5dea5f104f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ ENHANCEMENTS:
 * Add interactive browser login method to TRE CLI for easier authentication ([#4856](https://github.com/microsoft/AzureTRE/issues/4856))
 * Harden security of the app gateway. ([#4863](https://github.com/microsoft/AzureTRE/pull/4863))
 * Pass OIDC vars directly to the devcontainer ([#4871](https://github.com/microsoft/AzureTRE/issues/4871))
+* Update `aiohttp` and `pytest` package versions. ([#4897](https://github.com/microsoft/AzureTRE/pull/4897))
 
 BUG FIXES:
 * Fix OpenAPI/schema sample generation for `get_sample_operation` step parameters. ([#4864](https://github.com/microsoft/AzureTRE/issues/4864))
diff --git a/airlock_processor/_version.py b/airlock_processor/_version.py
index 8d8e3b7702..e0ebe2b03b 100644
--- a/airlock_processor/_version.py
+++ b/airlock_processor/_version.py
@@ -1 +1 @@
-__version__ = "0.8.9"
+__version__ = "0.8.10"
diff --git a/airlock_processor/requirements-dev.txt b/airlock_processor/requirements-dev.txt
index 1714408a37..5f82229dfc 100644
--- a/airlock_processor/requirements-dev.txt
+++ b/airlock_processor/requirements-dev.txt
@@ -1,3 +1,3 @@
 # Dev requirements
-pytest==8.3.3
+pytest==9.0.3
 mock==5.2.0
diff --git a/api_app/_version.py b/api_app/_version.py
index 2cb28789f2..7923a95d33 100644
--- a/api_app/_version.py
+++ b/api_app/_version.py
@@ -1 +1 @@
-__version__ = "0.25.15"
+__version__ = "0.25.16"
diff --git a/api_app/requirements-dev.txt b/api_app/requirements-dev.txt
index ae35b66de1..0a6be8ca25 100644
--- a/api_app/requirements-dev.txt
+++ b/api_app/requirements-dev.txt
@@ -1,5 +1,5 @@
 # Dev requirements
-pytest-asyncio==0.24.0
+pytest-asyncio==1.3.0
 httpx==0.28.1
 mock==5.2.0
-pytest==8.3.3
+pytest==9.0.3
diff --git a/api_app/requirements.txt b/api_app/requirements.txt
index 195b468a28..1195c2ab8e 100644
--- a/api_app/requirements.txt
+++ b/api_app/requirements.txt
@@ -1,4 +1,4 @@
-aiohttp==3.13.3
+aiohttp==3.13.4
 azure-core==1.38.0
 azure-cosmos==4.14.3
 azure-eventgrid==4.22.0
diff --git a/cli/requirements.txt b/cli/requirements.txt
index 6ff31f310b..82b05cbab2 100644
--- a/cli/requirements.txt
+++ b/cli/requirements.txt
@@ -8,4 +8,4 @@ pygments==2.19.2
 PyJWT==2.10.1
 azure-cli-core==2.68.0
 azure-identity==1.25.1
-aiohttp==3.13.3
+aiohttp==3.13.4
diff --git a/cli/setup.py b/cli/setup.py
index 5a88a85f79..5f0ee50a03 100644
--- a/cli/setup.py
+++ b/cli/setup.py
@@ -49,7 +49,7 @@
         "PyJWT==2.10.1",
         "azure-cli-core==2.68.0",
         "azure-identity==1.25.1",
-        "aiohttp==3.13.3"
+        "aiohttp==3.13.4"
     ],
 
     namespace_packages=[],
diff --git a/e2e_tests/requirements.txt b/e2e_tests/requirements.txt
index d318c0cc9d..fbb6158903 100644
--- a/e2e_tests/requirements.txt
+++ b/e2e_tests/requirements.txt
@@ -1,7 +1,7 @@
 # API
 httpx==0.28.1
-pytest==8.3.3
-pytest-asyncio==0.24.0
+pytest==9.0.3
+pytest-asyncio==1.3.0
 starlette==0.50.0
 pytest-timeout==2.2.0
 pytest-xdist==3.3.1
diff --git a/resource_processor/_version.py b/resource_processor/_version.py
index 26c36ca79a..f2b93b13de 100644
--- a/resource_processor/_version.py
+++ b/resource_processor/_version.py
@@ -1 +1 @@
-__version__ = "0.13.3"
+__version__ = "0.13.4"
diff --git a/resource_processor/vmss_porter/requirements.txt b/resource_processor/vmss_porter/requirements.txt
index b984362eb0..0e3a351a49 100644
--- a/resource_processor/vmss_porter/requirements.txt
+++ b/resource_processor/vmss_porter/requirements.txt
@@ -1,4 +1,4 @@
-aiohttp==3.13.3
+aiohttp==3.13.4
 azure-cli-core==2.68.0
 azure-identity==1.25.1
 azure-monitor-opentelemetry==1.6.4