diff --git a/_constraints b/_constraints
index 5daa94f..b778060 100644
--- a/_constraints
+++ b/_constraints
@@ -5,10 +5,17 @@
       <size unit="G">24</size>
     </disk>
     <physicalmemory>
-      <size unit="G">2</size>
+      <size unit="G">4</size>
     </physicalmemory>
-    <memoryperjob>
-      <size unit="M">2000</size>
-    </memoryperjob>
   </hardware>
+  <overwrite>
+    <conditions>
+      <arch>x86_64</arch>
+    </conditions>
+    <hardware>
+      <memoryperjob>
+        <size unit="M">2000</size>
+      </memoryperjob>
+    </hardware>
+  </overwrite>
 </constraints>
diff --git a/insighttoolkit.changes b/insighttoolkit.changes
index a336ee6..cbcff77 100644
--- a/insighttoolkit.changes
+++ b/insighttoolkit.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Oct  6 06:54:33 UTC 2020 - Guillaume GARDET <guillaume.gardet@opensuse.org>
+
+- Re-enable build for aarch64 since eigen has been fixed
+
 -------------------------------------------------------------------
 Thu Aug 20 17:49:29 UTC 2020 - Atri Bhattacharya <badshah400@gmail.com>
 
diff --git a/insighttoolkit.spec b/insighttoolkit.spec
index 2ac5b15..16e2e2b 100644
--- a/insighttoolkit.spec
+++ b/insighttoolkit.spec
@@ -63,8 +63,6 @@ BuildRequires:  pkgconfig(libpng)
 BuildRequires:  pkgconfig(libtiff-4)
 BuildRequires:  pkgconfig(libxml-2.0)
 BuildRequires:  pkgconfig(zlib)
-# Builds currently fail on aarch64 due to known eigen+CastXML issues: https://gitlab.com/libeigen/eigen/-/issues/1979
-ExcludeArch:    aarch64
 
 %description
 The Insight Toolkit (ITK) is a toolkit for N-dimensional scientific