diff --git a/.travis/pin-arvo-commit.txt b/.travis/pin-arvo-commit.txt
index 3c8e052bd9..9d21e4199e 100644
--- a/.travis/pin-arvo-commit.txt
+++ b/.travis/pin-arvo-commit.txt
@@ -1 +1 @@
-b8a4ab3f10c1039970901e56f5abe24301f38406
+6a1f32bb1984fa9329c072de09ba67b212c8dbed
diff --git a/include/c/motes.h b/include/c/motes.h
index f05f716bab..78bd52e380 100644
--- a/include/c/motes.h
+++ b/include/c/motes.h
@@ -1187,6 +1187,7 @@
 #   define c3__void   c3_s4('v','o','i','d')
 #   define c3__vorp   c3_s4('v','o','r','p')
 #   define c3__way    c3_s3('w','a','y')
+#   define c3__wack   c3_s4('w','a','c','k')
 #   define c3__wail   c3_s4('w','a','i','l')
 #   define c3__wake   c3_s4('w','a','k','e')
 #   define c3__wamp   c3_s4('w','a','m','p')
@@ -1201,6 +1202,7 @@
 #   define c3__werp   c3_s4('w','e','r','p')
 #   define c3__west   c3_s4('w','e','s','t')
 #   define c3__what   c3_s4('w','h','a','t')
+#   define c3__whom   c3_s4('w','h','o','m')
 #   define c3__wing   c3_s4('w','i','n','g')
 #   define c3__wild   c3_s4('w','i','l','d')
 #   define c3__win    c3_s3('w','i','n')
diff --git a/vere/sist.c b/vere/sist.c
index ec6f77fd98..275eedb2c4 100644
--- a/vere/sist.c
+++ b/vere/sist.c
@@ -1189,6 +1189,19 @@ sist_key(u3_noun des)
 void
 u3_sist_boot(void)
 {
+  //  iterate entropy
+  //
+  {
+    c3_w    eny_w[16];
+    u3_noun eny;
+
+    c3_rand(eny_w);
+    eny = u3i_words(16, eny_w);
+
+    u3v_plan(u3nt(u3_blip, c3__arvo, u3_nul), u3nc(c3__wack, u3k(eny)));
+    u3z(eny);
+  }
+
   if ( c3n == u3_Host.ops_u.nuu ) {
     _sist_rest();
 
@@ -1262,6 +1275,10 @@ u3_sist_boot(void)
 
     u3A->own = who;
 
+    //  set single-home
+    //
+    u3v_plan(u3nt(u3_blip, c3__arvo, u3_nul), u3nc(c3__whom, u3k(who)));
+
     // initialize ames
     {
       u3_noun tuf = (c3y == u3A->fak) ? u3_nul : u3h(u3t(u3t(u3t(u3t(pig)))));