fixed upper bound for Singular

mohamed-barakat · mohamed-barakat · commit 7fa59350a64b · 2020-09-03T23:39:39.000+02:00
diff --git a/Project.toml b/Project.toml
@@ -14,7 +14,7 @@ Markdown = "d6f4376e-aef5-505a-96c1-9c027394607a"
 
 [compat]
 GAP = "^0"
-Singular = ">=0.4.0, <1"
+Singular = "0.4 - 0"
 julia = "1.3"
 
 [extras]
