diff --git a/src/spectator/matchers/array_matcher.cr b/src/spectator/matchers/array_matcher.cr
index acbf26d..e19153e 100644
--- a/src/spectator/matchers/array_matcher.cr
+++ b/src/spectator/matchers/array_matcher.cr
@@ -7,9 +7,9 @@ module Spectator::Matchers
   # Matcher for checking that the contents of one array (or similar type)
   # has the exact same contents as another and in the same order.
   struct ArrayMatcher(ExpectedType) < Matcher
-    private getter expected : TestValue(ExpectedType)
+    private getter expected
 
-    def initialize(@expected)
+    def initialize(@expected : TestValue(Enumerable(ExpectedType)))
     end
 
     def description
diff --git a/src/spectator/matchers/value_matcher.cr b/src/spectator/matchers/value_matcher.cr
index fc00c42..0710918 100644
--- a/src/spectator/matchers/value_matcher.cr
+++ b/src/spectator/matchers/value_matcher.cr
@@ -6,11 +6,11 @@ module Spectator::Matchers
   abstract struct ValueMatcher(ExpectedType) < StandardMatcher
     # Expected value.
     # Sub-types may use this value to test the expectation and generate message strings.
-    private getter expected : TestValue(ExpectedType)
+    private getter expected
 
     # Creates the value matcher.
     # The expected value is stored for later use.
-    def initialize(@expected)
+    def initialize(@expected : TestValue(ExpectedType))
     end
 
     private def values(actual)