diff --git a/edn/src/edn.rustpeg b/edn/src/edn.rustpeg
index 2a642bea..5f97ea6d 100644
--- a/edn/src/edn.rustpeg
+++ b/edn/src/edn.rustpeg
@@ -146,7 +146,7 @@ namespace_separator = "/"
 // Keywords follow the rules of symbols, except they can (and must) begin with :
 // e.g. :fred or :my/fred. See https://github.com/edn-format/edn#keywords
 symbol_char_initial = [a-zA-Z0-9*!_?$%&=<>]
-symbol_char_subsequent = [a-zA-Z0-9*!_?$%&=<>-]
+symbol_char_subsequent = [+a-zA-Z0-9*!_?$%&=<>-]
 
 symbol_namespace = symbol_char_initial symbol_char_subsequent* (namespace_divider symbol_char_subsequent+)*
 symbol_name = ( symbol_char_initial+ symbol_char_subsequent* )
diff --git a/edn/tests/tests.rs b/edn/tests/tests.rs
index d9dc9380..54cf87b0 100644
--- a/edn/tests/tests.rs
+++ b/edn/tests/tests.rs
@@ -413,6 +413,9 @@ fn test_keyword() {
 
     assert!(keyword(":").is_err());
     assert!(keyword(":foo/").is_err());
+
+    assert_eq!(keyword(":foo*!_?$%&=<>-+").unwrap(), k_plain("foo*!_?$%&=<>-+"));
+    assert_eq!(keyword(":foo/bar*!_?$%&=<>-+").unwrap(), k_ns("foo", "bar*!_?$%&=<>-+"));
 }
 
 #[test]