diff --git a/lib/spack/external/__init__.py b/lib/spack/external/__init__.py
index 1d707a6d9a..8adc4e1271 100644
--- a/lib/spack/external/__init__.py
+++ b/lib/spack/external/__init__.py
@@ -11,7 +11,7 @@
 
 * Homepage: https://pypi.python.org/pypi/archspec
 * Usage: Labeling, comparison and detection of microarchitectures
-* Version: 0.1.2 (commit 130607c373fd88cd3c43da94c0d3afd3a44084b0)
+* Version: 0.1.2 (commit 26dec9d47e509daf8c970de4c89da200da52ad20)
 
 argparse
 --------
diff --git a/lib/spack/external/archspec/json/cpu/microarchitectures.json b/lib/spack/external/archspec/json/cpu/microarchitectures.json
index 0eacadfbaa..e34bf9e179 100644
--- a/lib/spack/external/archspec/json/cpu/microarchitectures.json
+++ b/lib/spack/external/archspec/json/cpu/microarchitectures.json
@@ -1725,6 +1725,12 @@
             "versions": ":",
             "flags": "-march=armv8-a -mtune=generic"
           }
+        ],
+        "arm": [
+          {
+            "versions": ":",
+            "flags": "-march=armv8-a -mtune=generic"
+          }
         ]
       }
     },
@@ -1828,6 +1834,12 @@
             "versions": "5:",
             "flags": "-march=armv8.2-a+crc+crypto+fp16+sve"
           }
+        ],
+        "arm": [
+          {
+            "versions": "20:",
+            "flags": "-march=armv8.2-a+crc+crypto+fp16+sve"
+          }
         ]
       }
     },