diff --git a/shard.yml b/shard.yml
index a509256..adb3cc4 100644
--- a/shard.yml
+++ b/shard.yml
@@ -1,5 +1,5 @@
 name: specfileparser
-version: 0.4.4
+version: 0.4.5
 
 authors:
      - Philippe Pittoli <karchnu@karchnu.fr>
diff --git a/src/specfileparser.cr b/src/specfileparser.cr
index 9cd2c20..6cbc979 100644
--- a/src/specfileparser.cr
+++ b/src/specfileparser.cr
@@ -87,8 +87,8 @@ class SpecFileParser
 	def parse_assignment (line : String)
 		# puts "simple assignment: #{line}"
 
-		name = /([a-zA-Z][a-zA-Z0-9]*):/.match(line).try &.[1]
-		value = /[a-zA-Z][a-zA-Z0-9]*: ([^#]*)/.match(line).try &.[1]
+		name = /([a-zA-Z][a-zA-Z0-9-_]*):/.match(line).try &.[1]
+		value = /[a-zA-Z][a-zA-Z0-9-_]*: ([^#]*)/.match(line).try &.[1]
 
 		if name.nil?
 			return