diff --git a/poetry.lock b/poetry.lock
index 1306f3961a..d6e2247bc9 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1771,13 +1771,13 @@ license = ["ukkonen"]
 
 [[package]]
 name = "idna"
-version = "2.10"
+version = "3.7"
 description = "Internationalized Domain Names in Applications (IDNA)"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=3.5"
 files = [
-    {file = "idna-2.10-py2.py3-none-any.whl", hash = "sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0"},
-    {file = "idna-2.10.tar.gz", hash = "sha256:b307872f855b18632ce0c21c5e45be78c0ea7ae4c15c828c20788b26921eb3f6"},
+    {file = "idna-3.7-py3-none-any.whl", hash = "sha256:82fee1fc78add43492d3a1898bfa6d8a904cc97d8427f683ed8e798d07761aa0"},
+    {file = "idna-3.7.tar.gz", hash = "sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc"},
 ]
 
 [[package]]
@@ -4682,4 +4682,4 @@ testing = ["coverage (>=5.0.3)", "zope.event", "zope.testing"]
 [metadata]
 lock-version = "2.0"
 python-versions = "~3.10.9"
-content-hash = "0c8c24f0b4bdb8b565d8c711fd214bb7dbbe78b49de39e9cd5dcbd006512545c"
+content-hash = "2f84ba82fc88fb8d792f0124b528f2f3332c6e400a90260119ee710f2b96afe5"
diff --git a/pyproject.toml b/pyproject.toml
index a60a709e8d..d6a4855b56 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -74,7 +74,7 @@ simple-salesforce = "^1.12.3"
 
 # Pinned dependencies
 certifi = "^2024.0.0" # pinned for security reasons: https://github.com/cds-snc/notification-api/security/dependabot/119
-idna = "2.10" # pinned to align with test moto dependency requirements (for <=2.9)
+idna = "3.7" # pinned to align with test moto dependency requirements (for <=2.9)
 flask-marshmallow = "0.14.0"
 aws-xray-sdk = "2.14.0"
 
@@ -83,7 +83,7 @@ flake8 = "6.1.0"
 gprof2dot = "2024.6.6"
 isort = "5.13.2"
 moto = "4.2.14"
-idna = "2.10"
+idna = "3.7"
 pytest = "7.4.4"
 pytest-env = "0.8.2"
 pytest-mock = "3.14.0"