diff --git a/mise.toml b/mise.toml
index eee0fd2..75a8d38 100644
--- a/mise.toml
+++ b/mise.toml
@@ -21,7 +21,7 @@ bats = "1.13.0"                           # Bash Automated Testing System
 "aqua:shenwei356/rush" = "0.9.0"          # Cross-file BATS parallel runner
 "shiv:secrets" = "0.1"                    # Provider-based secret management (keychain, 1password)
 "shiv:emails" = "0.3"
-"shiv:sessions" = "0.4.18"                # Pi 0.83 runtime and clean child boundary required by agent task
+"shiv:sessions" = "0.4.19"                # Pi 0.83 runtime and clean child boundary required by agent task
 "shiv:blobs" = "0.1"                      # Blob storage for CI session backup
 "shiv:threads" = "0.2"                    # HUMAN.md thread management
 "shiv:readme" = "0.3"                     # README.tsx -> README.md generation