diff --git a/Project.toml b/Project.toml
index 8404fd5..47b4198 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "UnixTimes"
 uuid = "ab1a18e7-b408-4913-896c-624bb82ed7f4"
 authors = ["Christian Rorvik <christian.rorvik@gmail.com>"]
-version = "1.7.0"
+version = "1.7.1"
 
 [deps]
 Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
diff --git a/src/UnixTimes.jl b/src/UnixTimes.jl
index 9bfa05a..9356718 100644
--- a/src/UnixTimes.jl
+++ b/src/UnixTimes.jl
@@ -53,6 +53,7 @@ Dates.Date(x::UnixTime) = Date(DateTime(x))
 Dates.Time(x::UnixTime) = Time(Nanosecond(Dates.value(x)))
 
 Base.convert(::Type{DateTime}, x::UnixTime) = DateTime(x)
+Base.promote_rule(::Type{DateTime}, ::Type{UnixTime}) = UnixTime
 
 UnixTime(x::Dates.TimeType) = convert(UnixTime, x)
 
diff --git a/test/runtests.jl b/test/runtests.jl
index ef499a8..f5a5cd8 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -44,6 +44,10 @@ end
     @test convert(UnixTime, DateTime(2020, 1, 2, 3, 4, 5, 6)) == UnixTime(2020, 1, 2, 3, 4, 5, 6)
 end
 
+@testset "promotion" begin
+    @test UnixTime("2025-01-01T10:00:00.000000000") == DateTime("2025-01-01T10:00:00")
+end
+
 @testset "io" begin
     x = UnixTime(2020, 1, 2, 3, 4, 5, 6, 7, 8)
     @test string(x) == "2020-01-02T03:04:05.006007008"