Fix version number.
diff --git a/Doc/boilerplate.tex b/Doc/boilerplate.tex
index 531e872..3166ce7 100644
--- a/Doc/boilerplate.tex
+++ b/Doc/boilerplate.tex
@@ -7,4 +7,4 @@
 }
 
 \date{April 14, 1998}		% XXX update before release!
-\release{1.5.1beta1}
+\release{1.5.1}
diff --git a/Doc/texinputs/boilerplate.tex b/Doc/texinputs/boilerplate.tex
index 531e872..3166ce7 100644
--- a/Doc/texinputs/boilerplate.tex
+++ b/Doc/texinputs/boilerplate.tex
@@ -7,4 +7,4 @@
 }
 
 \date{April 14, 1998}		% XXX update before release!
-\release{1.5.1beta1}
+\release{1.5.1}