diff --git a/contrib/dev_reqs/requirements.txt b/contrib/dev_reqs/requirements.txt
index c2474adf70..47d7e6e472 100644
--- a/contrib/dev_reqs/requirements.txt
+++ b/contrib/dev_reqs/requirements.txt
@@ -139,9 +139,9 @@ charset-normalizer==3.4.7 \
     # via
     #   -c src/backend/requirements.txt
     #   requests
-idna==3.11 \
-    --hash=sha256:771a87f49d9defaf64091e6e6fe9c18d4833f140bd19464795bc32d966ca37ea \
-    --hash=sha256:795dafcc9c04ed0c1fb032c2aa73654d8e8c5023a7df64a53f39190ada629902
+idna==3.15 \
+    --hash=sha256:048adeaf8c2d788c40fee287673ccaa74c24ffd8dcf09ffa555a2fbb59f10ac8 \
+    --hash=sha256:ca962446ea538f7092a95e057da437618e886f4d349216d2b1e294abfdb65fdc
     # via
     #   -c src/backend/requirements.txt
     #   requests
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 5f890f203a..596d4b06f6 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -227,9 +227,9 @@ httpx==0.28.1 \
     --hash=sha256:75e98c5f16b0f35b567856f597f06ff2270a374470a5c2392242528e3e3e42fc \
     --hash=sha256:d909fcccc110f8c7faf814ca82a9a4d816bc5a6dbfea25d6591d6985b8ba59ad
     # via neoteroi-mkdocs
-idna==3.11 \
-    --hash=sha256:771a87f49d9defaf64091e6e6fe9c18d4833f140bd19464795bc32d966ca37ea \
-    --hash=sha256:795dafcc9c04ed0c1fb032c2aa73654d8e8c5023a7df64a53f39190ada629902
+idna==3.15 \
+    --hash=sha256:048adeaf8c2d788c40fee287673ccaa74c24ffd8dcf09ffa555a2fbb59f10ac8 \
+    --hash=sha256:ca962446ea538f7092a95e057da437618e886f4d349216d2b1e294abfdb65fdc
     # via
     #   -c src/backend/requirements.txt
     #   anyio
diff --git a/src/backend/requirements-3.14.txt b/src/backend/requirements-3.14.txt
index 818cd0163d..4d028adb67 100644
--- a/src/backend/requirements-3.14.txt
+++ b/src/backend/requirements-3.14.txt
@@ -971,9 +971,9 @@ icalendar==7.0.3 \
     # via
     #   -c src/backend/requirements.txt
     #   django-ical
-idna==3.11 \
-    --hash=sha256:771a87f49d9defaf64091e6e6fe9c18d4833f140bd19464795bc32d966ca37ea \
-    --hash=sha256:795dafcc9c04ed0c1fb032c2aa73654d8e8c5023a7df64a53f39190ada629902
+idna==3.15 \
+    --hash=sha256:048adeaf8c2d788c40fee287673ccaa74c24ffd8dcf09ffa555a2fbb59f10ac8 \
+    --hash=sha256:ca962446ea538f7092a95e057da437618e886f4d349216d2b1e294abfdb65fdc
     # via
     #   -c src/backend/requirements.txt
     #   django-anymail
diff --git a/src/backend/requirements-dev-3.14.txt b/src/backend/requirements-dev-3.14.txt
index 3a61040c98..efc579ab49 100644
--- a/src/backend/requirements-dev-3.14.txt
+++ b/src/backend/requirements-dev-3.14.txt
@@ -467,9 +467,9 @@ identify==2.6.18 \
     --hash=sha256:873ac56a5e3fd63e7438a7ecbc4d91aca692eb3fefa4534db2b7913f3fc352fd \
     --hash=sha256:8db9d3c8ea9079db92cafb0ebf97abdc09d52e97f4dcf773a2e694048b7cd737
     # via pre-commit
-idna==3.11 \
-    --hash=sha256:771a87f49d9defaf64091e6e6fe9c18d4833f140bd19464795bc32d966ca37ea \
-    --hash=sha256:795dafcc9c04ed0c1fb032c2aa73654d8e8c5023a7df64a53f39190ada629902
+idna==3.15 \
+    --hash=sha256:048adeaf8c2d788c40fee287673ccaa74c24ffd8dcf09ffa555a2fbb59f10ac8 \
+    --hash=sha256:ca962446ea538f7092a95e057da437618e886f4d349216d2b1e294abfdb65fdc
     # via
     #   -c src/backend/requirements-3.14.txt
     #   -c src/backend/requirements.txt
diff --git a/src/backend/requirements-dev.txt b/src/backend/requirements-dev.txt
index 98e3f8d82b..fd992bc192 100644
--- a/src/backend/requirements-dev.txt
+++ b/src/backend/requirements-dev.txt
@@ -461,9 +461,9 @@ identify==2.6.18 \
     --hash=sha256:873ac56a5e3fd63e7438a7ecbc4d91aca692eb3fefa4534db2b7913f3fc352fd \
     --hash=sha256:8db9d3c8ea9079db92cafb0ebf97abdc09d52e97f4dcf773a2e694048b7cd737
     # via pre-commit
-idna==3.11 \
-    --hash=sha256:771a87f49d9defaf64091e6e6fe9c18d4833f140bd19464795bc32d966ca37ea \
-    --hash=sha256:795dafcc9c04ed0c1fb032c2aa73654d8e8c5023a7df64a53f39190ada629902
+idna==3.15 \
+    --hash=sha256:048adeaf8c2d788c40fee287673ccaa74c24ffd8dcf09ffa555a2fbb59f10ac8 \
+    --hash=sha256:ca962446ea538f7092a95e057da437618e886f4d349216d2b1e294abfdb65fdc
     # via
     #   -c src/backend/requirements.txt
     #   requests
diff --git a/src/backend/requirements.txt b/src/backend/requirements.txt
index 8688ff18f8..5db1d3fbee 100644
--- a/src/backend/requirements.txt
+++ b/src/backend/requirements.txt
@@ -862,9 +862,9 @@ icalendar==7.0.3 \
     --hash=sha256:8c9fea6d3a89671bba8b6938d8565b4d0ec465c6a2796ef0f92790dcb9e627cd \
     --hash=sha256:95027ece087ab87184d765f03761f25875821f74cdd18d3b57e9c868216d8fde
     # via django-ical
-idna==3.11 \
-    --hash=sha256:771a87f49d9defaf64091e6e6fe9c18d4833f140bd19464795bc32d966ca37ea \
-    --hash=sha256:795dafcc9c04ed0c1fb032c2aa73654d8e8c5023a7df64a53f39190ada629902
+idna==3.15 \
+    --hash=sha256:048adeaf8c2d788c40fee287673ccaa74c24ffd8dcf09ffa555a2fbb59f10ac8 \
+    --hash=sha256:ca962446ea538f7092a95e057da437618e886f4d349216d2b1e294abfdb65fdc
     # via
     #   django-anymail
     #   requests