diff --git a/glossaries.tex b/glossaries.tex
index 83621a8..e3e748a 100644
--- a/glossaries.tex
+++ b/glossaries.tex
@@ -7,5 +7,6 @@
 \newacronym{SIG}{SIG}{Special Integration Work Group}
 \newacronym{TWG}{TWG}{Technical Work Group}
 \newacronym{STIG}{STIG}{Special Technical Integration Group}
+\newacronym{ISA}{ISA}{Instruction Set Architecture}
 
 %%% Specific Acronyms