diff --git a/apps.awesim.org/apps/shell/env b/apps.awesim.org/apps/shell/env
index e409d27..077620d 100644
--- a/apps.awesim.org/apps/shell/env
+++ b/apps.awesim.org/apps/shell/env
@@ -3,4 +3,7 @@ OOD_DEFAULT_SSHHOST=owens.osc.edu
 OOD_SSHHOST_ALLOWLIST="a[0-1][0-9][0-9][0-9].ten.osc.edu:o[0-1][0-9][0-9][0-9].ten.osc.edu:p[0-1][0-9][0-9][0-9].ten.osc.edu:c[0-1][0-9][0-9][0-9].ten.osc.edu"
 
 OOD_SHELL_PING_PONG="true"
-OOD_SHELL_MAX_DURATION_MS=7200000
+
+# inactive timeout just slightly higher to avoid collision or multiple attempts to close
+OOD_SHELL_MAX_DURATION_MS=28800000
+OOD_SHELL_INACTIVE_TIMEOUT_MS=28860000
diff --git a/ondemand.osc.edu/apps/shell/env b/ondemand.osc.edu/apps/shell/env
index e409d27..077620d 100644
--- a/ondemand.osc.edu/apps/shell/env
+++ b/ondemand.osc.edu/apps/shell/env
@@ -3,4 +3,7 @@ OOD_DEFAULT_SSHHOST=owens.osc.edu
 OOD_SSHHOST_ALLOWLIST="a[0-1][0-9][0-9][0-9].ten.osc.edu:o[0-1][0-9][0-9][0-9].ten.osc.edu:p[0-1][0-9][0-9][0-9].ten.osc.edu:c[0-1][0-9][0-9][0-9].ten.osc.edu"
 
 OOD_SHELL_PING_PONG="true"
-OOD_SHELL_MAX_DURATION_MS=7200000
+
+# inactive timeout just slightly higher to avoid collision or multiple attempts to close
+OOD_SHELL_MAX_DURATION_MS=28800000
+OOD_SHELL_INACTIVE_TIMEOUT_MS=28860000