diff --git a/build/Makefile b/build/Makefile
index d48a978..3ccab1c 100644
--- a/build/Makefile
+++ b/build/Makefile
@@ -138,6 +138,7 @@ cmd:	dirs \
 	$(BINDIR)/roff \
 	$(BINDIR)/salv \
 	$(BINDIR)/sh \
+	$(BINDIR)/st \
 	$(BINDIR)/stat \
 	$(BINDIR)/tm \
 	$(BINDIR)/ttt \
@@ -254,6 +255,10 @@ TTT=$(CMDSRC)/ttt1.s $(CMDSRC)/ttt2.s
 $(BINDIR)/ttt: $(TTT)
 	$(AS) $(ASARGS) -o $(BINDIR)/ttt $(TTT)
 
+ST=$(CMDSRC)/st1.s $(CMDSRC)/st2.s $(CMDSRC)/st3.s $(CMDSRC)/st4.s $(CMDSRC)/fop.s $(CMDSRC)/st5.s $(CMDSRC)/st6.s $(CMDSRC)/st7.s
+$(BINDIR)/st: $(ST)
+	$(AS) $(ASARGS) -o $(BINDIR)/st $(ST)
+
 $(BINDIR)/un: $(CMDSRC)/un.s
 	$(AS) $(ASARGS) -o $(BINDIR)/un $(CMDSRC)/un.s
 
diff --git a/build/proto b/build/proto
index 618bf6e..3e03e9e 100644
--- a/build/proto
+++ b/build/proto
@@ -59,6 +59,7 @@ dd           drwr- -1 4
         tm       frwr- -1 bin/tm
         ttt      frwr- -1 bin/ttt
         dttt     l---- -1
+        st       frwr- -1 bin/st
         un       frwr- -1 bin/un
 	$
     ken      drwr- 12