diff --git a/src/backend/pyproject.toml b/src/backend/pyproject.toml
index d3526cb41..7a5e2b67b 100644
--- a/src/backend/pyproject.toml
+++ b/src/backend/pyproject.toml
@@ -51,7 +51,7 @@ dependencies = [
     "emoji==2.15.0",
     "factory_boy==3.3.3",
     "gunicorn==26.0.0",
-    "joserfc==1.6.5",
+    "joserfc==1.6.8",
     "jsonschema==4.26.0",
     "langfuse==3.11.2",
     "lxml==6.1.1",
diff --git a/src/backend/uv.lock b/src/backend/uv.lock
index c913e6de3..24c3367d4 100644
--- a/src/backend/uv.lock
+++ b/src/backend/uv.lock
@@ -1072,7 +1072,7 @@ requires-dist = [
     { name = "gunicorn", specifier = "==26.0.0" },
     { name = "ipdb", marker = "extra == 'dev'", specifier = "==0.13.13" },
     { name = "ipython", marker = "extra == 'dev'", specifier = "==9.15.0" },
-    { name = "joserfc", specifier = "==1.6.5" },
+    { name = "joserfc", specifier = "==1.6.8" },
     { name = "jsonschema", specifier = "==4.26.0" },
     { name = "langfuse", specifier = "==3.11.2" },
     { name = "lxml", specifier = "==6.1.1" },
@@ -1240,14 +1240,14 @@ wheels = [
 
 [[package]]
 name = "joserfc"
-version = "1.6.5"
+version = "1.6.8"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "cryptography" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/3b/dc/5f768c2e391e9afabe5d18e3221346deb5fb6338565f1ccc9e7c6d7befdd/joserfc-1.6.5.tar.gz", hash = "sha256:1482a7db78fb4602e44ed89e51b599d052e091288c7c532c5b694e20149dec48", size = 231881, upload-time = "2026-05-06T04:58:13.408Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/5d/ac/d4fd5b30f82900eac60d765f179f0ba005825ac462cc8ced6e13ec685ab3/joserfc-1.6.8.tar.gz", hash = "sha256:878620c553a6ebdd76ccdc356782fee3f735f21a356d079a546b42a4670ace5f", size = 232930, upload-time = "2026-05-27T03:22:37.819Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/54/3b/ad1cb22e75c963b1f07c8a2329bf47227ce7e4361df5eb2fb101b2ce33ef/joserfc-1.6.5-py3-none-any.whl", hash = "sha256:e9878a0f8243fe7b95e11fdda81374ca9f7a689e302751579d3dfdeec559675e", size = 70464, upload-time = "2026-05-06T04:58:11.668Z" },
+    { url = "https://files.pythonhosted.org/packages/98/8c/5cdce2cf3ce8155849baf9a5e2ce77e89dc87ec3bdb38259e5d85fbc45bd/joserfc-1.6.8-py3-none-any.whl", hash = "sha256:22fb31a69094a5e6f44632002a9df2c30c941fc6c8ce1b037e92c03de954cf9f", size = 70927, upload-time = "2026-05-27T03:22:35.796Z" },
 ]
 
 [[package]]