diff --git a/src/timespans.jl b/src/timespans.jl
index 90aa8ebe..5e33a01a 100644
--- a/src/timespans.jl
+++ b/src/timespans.jl
@@ -78,6 +78,8 @@ function contains(a::AbstractTimeSpan, b::AbstractTimeSpan)
     return first(a) <= first(b) && last(a) >= last(b)
 end
 
+contains(a::AbstractTimeSpan, b) = contains(a, TimeSpan(b))
+
 """
     overlaps(a, b)
 
diff --git a/test/timespans.jl b/test/timespans.jl
index 0fcb12aa..1127bb84 100644
--- a/test/timespans.jl
+++ b/test/timespans.jl
@@ -22,6 +22,7 @@ end
     @test !contains(TimeSpan(11, 20), TimeSpan(10, 19))
     @test !contains(TimeSpan(10, 19), TimeSpan(10, 21))
     @test !contains(TimeSpan(11, 19), TimeSpan(10, 20))
+    @test contains(TimeSpan(1, 10), Nanosecond(4))
 end
 
 @testset "overlaps(::TimeSpan...)" begin