diff --git a/tools/dasm b/tools/dasm
index 0c75ecb5..946e272f 160000
--- a/tools/dasm
+++ b/tools/dasm
@@ -1 +1 @@
-Subproject commit 0c75ecb518763b2b201fe5f923580ce6d6f15acb
+Subproject commit 946e272f954b6a4d1dd277eb58875edda220d720
diff --git a/tools/pdp6 b/tools/pdp6
index 6e2eb547..99a2eb7f 160000
--- a/tools/pdp6
+++ b/tools/pdp6
@@ -1 +1 @@
-Subproject commit 6e2eb547cad70cb8278ff601eb51cdac6655dbca
+Subproject commit 99a2eb7f3207c4788a6985f49369cca685ddaad7
diff --git a/tools/simh b/tools/simh
index 06d78600..e1db7dec 160000
--- a/tools/simh
+++ b/tools/simh
@@ -1 +1 @@
-Subproject commit 06d78600b3eea2d41479f6c0aac68ceff9d5ff4c
+Subproject commit e1db7dec41098cc7e22d2b379a26a7c4561dfa14
diff --git a/tools/tapeutils b/tools/tapeutils
index 28dd1ac6..34ddfceb 160000
--- a/tools/tapeutils
+++ b/tools/tapeutils
@@ -1 +1 @@
-Subproject commit 28dd1ac62df40d8caba927774a04cb14dd182687
+Subproject commit 34ddfcebcc02392c9433cc550df0fa91da262c23