diff --git a/pysd/translators/vensim/parsing_grammars/sketch.peg b/pysd/translators/vensim/parsing_grammars/sketch.peg
index 14f69e2d..4decd221 100644
--- a/pysd/translators/vensim/parsing_grammars/sketch.peg
+++ b/pysd/translators/vensim/parsing_grammars/sketch.peg
@@ -35,7 +35,7 @@ other_objects = other_objects_code "," anything
 
 # fonts
 font_properties = font_name? "|" font_size? "|" font_style? "|" color
-font_style =  "B" / "I" / "U" / "S" / "V"  # italics, bold, underline, etc
+font_style =  ("B" / "I" / "U" / "S" / "V")+  # italics, bold, underline, etc
 font_size =  ~r"\d+"  # this needs to be made a regex to match any font
 font_name = ~r"(?<=,)[^\|\d]+(?=\|)"
 
diff --git a/requirements.txt b/requirements.txt
index 2e14f4ea..8d35a4d9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ lxml
 regex
 chardet
 black
-openpyxl>=3.1
+openpyxl>=3.1.2
 scipy
 progressbar2
 portion