diff --git a/core/shared/src/main/scala-2.13+/fs2/Chunk213And3Compat.scala b/core/shared/src/main/scala-2.13+/fs2/Chunk213And3Compat.scala
index a12bbcc8c0..19dc44cd28 100644
--- a/core/shared/src/main/scala-2.13+/fs2/Chunk213And3Compat.scala
+++ b/core/shared/src/main/scala-2.13+/fs2/Chunk213And3Compat.scala
@@ -85,7 +85,7 @@ private[fs2] trait ChunkCompanion213And3Compat {
     i match {
       case arraySeq: ArraySeq[O] =>
         val arr = arraySeq.unsafeArray.asInstanceOf[Array[O]]
-        Some(array(arr)(ClassTag[O](arr.getClass.getComponentType)))
+        Some(array(arr)(using ClassTag[O](arr.getClass.getComponentType)))
 
       case _ =>
         None
diff --git a/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala b/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala
index 2d6be7db0e..4cfd8ac04e 100644
--- a/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala
+++ b/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala
@@ -36,7 +36,7 @@ private[fs2] trait ChunkPlatform[+O] extends Chunk213And3Compat[O] {
     this match {
       case as: Chunk.IArraySlice[_] if ct.wrap.runtimeClass eq as.getClass =>
         as.asInstanceOf[Chunk.IArraySlice[O2]]
-      case _ => new Chunk.IArraySlice(IArray.unsafeFromArray(toArray(ct)), 0, size)
+      case _ => new Chunk.IArraySlice(IArray.unsafeFromArray(toArray(using ct)), 0, size)
     }
 
   private[fs2] def asSeqPlatform: Option[IndexedSeq[O]] =
@@ -55,7 +55,7 @@ private[fs2] trait ChunkPlatform[+O] extends Chunk213And3Compat[O] {
         Some(
           ArraySeq
             .unsafeWrapArray(
-              IArray.genericWrapArray(iArraySlice.values).toArray(iArraySlice.ct)
+              IArray.genericWrapArray(iArraySlice.values).toArray(using iArraySlice.ct)
             )
             .slice(
               from = iArraySlice.offset,
diff --git a/core/shared/src/main/scala-3/internal/package.scala b/core/shared/src/main/scala-3/internal/package.scala
index 4da7e022db..adc6ad0e69 100644
--- a/core/shared/src/main/scala-3/internal/package.scala
+++ b/core/shared/src/main/scala-3/internal/package.scala
@@ -28,5 +28,5 @@ package object internal {
   private[fs2] type Factory[-A, +C] = scala.collection.Factory[A, C]
 
   private[fs2] def makeArrayBuilder[A](implicit ct: ClassTag[A]): ArrayBuilder[A] =
-    ArrayBuilder.make(ct)
+    ArrayBuilder.make(using ct)
 }
diff --git a/core/shared/src/main/scala/fs2/Chunk.scala b/core/shared/src/main/scala/fs2/Chunk.scala
index cbce1c1115..22ea3daa0b 100644
--- a/core/shared/src/main/scala/fs2/Chunk.scala
+++ b/core/shared/src/main/scala/fs2/Chunk.scala
@@ -776,7 +776,7 @@ object Chunk
 
       case a: mutable.ArraySeq[o] =>
         val arr = a.array.asInstanceOf[Array[O]]
-        array(arr)(ClassTag(arr.getClass.getComponentType))
+        array(arr)(using ClassTag(arr.getClass.getComponentType))
 
       case l: List[O] =>
         if (l.isEmpty) empty
diff --git a/core/shared/src/main/scala/fs2/Compiler.scala b/core/shared/src/main/scala/fs2/Compiler.scala
index 222d7712f7..efb00082c0 100644
--- a/core/shared/src/main/scala/fs2/Compiler.scala
+++ b/core/shared/src/main/scala/fs2/Compiler.scala
@@ -179,7 +179,7 @@ object Compiler extends CompilerLowPriority {
     }
 
     implicit def forSync[F[_]](implicit F: Sync[F]): Target[F] = F match {
-      case async: Async[F @unchecked] => Target.forConcurrent(async)
+      case async: Async[F @unchecked] => Target.forConcurrent(using async)
       case _                          => new SyncTarget
     }
 
diff --git a/core/shared/src/main/scala/fs2/text.scala b/core/shared/src/main/scala/fs2/text.scala
index b3e04b862a..93166de104 100644
--- a/core/shared/src/main/scala/fs2/text.scala
+++ b/core/shared/src/main/scala/fs2/text.scala
@@ -556,7 +556,7 @@ object text {
             case Some((max, raiseThrowable)) if stringBuilder.length > max =>
               Pull.raiseError[F](
                 new LineTooLongException(stringBuilder.length, max)
-              )(raiseThrowable)
+              )(using raiseThrowable)
             case _ =>
               Pull.output(Chunk.from(linesBuffer)) >> go(
                 stream,