diff --git a/release-notes.txt b/release-notes.txt
index 72c765f..e87f48b 100644
--- a/release-notes.txt
+++ b/release-notes.txt
@@ -2,6 +2,7 @@
 Release notes:
 
 Unreleased
+    - test: rename `SideEffect` module to `SideEffects` in TaskSeq.Concat.Tests.fs, TaskSeq.Delay.Tests.fs, and TaskSeq.Item.Tests.fs for consistency with the rest of the test suite (50+ files already use the plural form)
     - test: add SideEffects module and ImmTaskSeq variant tests to TaskSeq.ChunkBy.Tests.fs, improving coverage for chunkBy and chunkByAsync
     - fixes: `Async.bind` signature corrected from `(Async<'T> -> Async<'U>)` to `('T -> Async<'U>)` to match standard monadic bind semantics (same as `Task.bind`); the previous signature made the function effectively equivalent to direct application
     - refactor: simplify splitAt 'rest' taskSeq to use while!, removing redundant go2 mutable and manual MoveNextAsync pre-advance
diff --git a/src/FSharp.Control.TaskSeq.Test/TaskSeq.Concat.Tests.fs b/src/FSharp.Control.TaskSeq.Test/TaskSeq.Concat.Tests.fs
index 5dd8e34..5ae04b9 100644
--- a/src/FSharp.Control.TaskSeq.Test/TaskSeq.Concat.Tests.fs
+++ b/src/FSharp.Control.TaskSeq.Test/TaskSeq.Concat.Tests.fs
@@ -181,7 +181,7 @@ module Immutable =
             |> consumeTaskSeq
         |> should throwAsyncExact typeof<NullReferenceException>
 
-module SideEffect =
+module SideEffects =
     [<Fact>]
     let ``TaskSeq-concat executes side effects of nested (taskseq)`` () =
         let mutable i = 0
diff --git a/src/FSharp.Control.TaskSeq.Test/TaskSeq.Delay.Tests.fs b/src/FSharp.Control.TaskSeq.Test/TaskSeq.Delay.Tests.fs
index c437beb..0f9e458 100644
--- a/src/FSharp.Control.TaskSeq.Test/TaskSeq.Delay.Tests.fs
+++ b/src/FSharp.Control.TaskSeq.Test/TaskSeq.Delay.Tests.fs
@@ -30,7 +30,7 @@ module Immutable =
         |> TaskSeq.delay
         |> validateSequence
 
-module SideEffect =
+module SideEffects =
     [<Fact>]
     let ``TaskSeq-delay executes side effects`` () = task {
         let mutable i = 0
diff --git a/src/FSharp.Control.TaskSeq.Test/TaskSeq.Item.Tests.fs b/src/FSharp.Control.TaskSeq.Test/TaskSeq.Item.Tests.fs
index d2fb270..376b748 100644
--- a/src/FSharp.Control.TaskSeq.Test/TaskSeq.Item.Tests.fs
+++ b/src/FSharp.Control.TaskSeq.Test/TaskSeq.Item.Tests.fs
@@ -105,7 +105,7 @@ module Immutable =
         tail |> should equal (Some 10)
     }
 
-module SideEffect =
+module SideEffects =
     [<Theory; ClassData(typeof<TestSideEffectTaskSeq>)>]
     let ``TaskSeq-item prove it searches the whole sequence`` variant = task {
         let ts = Gen.getSeqWithSideEffect variant