diff --git a/requirements.in b/requirements.in
index b499c2b8..19de55b3 100644
--- a/requirements.in
+++ b/requirements.in
@@ -18,5 +18,5 @@ marshmallow==3.26.1
 pydantic==2.11.2
 pyOpenSSL==25.0.0
 pytz==2025.2
-signxml==4.0.3
+signxml==4.0.5
 typing-extensions==4.12.2
diff --git a/requirements.txt b/requirements.txt
index 0ebd44ae..aa68afaa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -64,7 +64,7 @@ rpds-py==0.19.0
     # via
     #   jsonschema
     #   referencing
-signxml==4.0.3
+signxml==4.0.5
     # via -r requirements.in
 sqlparse==0.5.0
     # via django