diff --git a/.circleci/config.yml b/.circleci/config.yml
index c7120f4..d6724d2 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -286,7 +286,7 @@ jobs:
           play_json_version: 2.8.1
           variant: Play 2.8, WS 2.1
 
-  common_scala31_play28_jdk11:
+  common_scala3_play29_jdk11:
     docker:
       - image: cimg/openjdk:11.0
 
@@ -296,11 +296,11 @@ jobs:
       - test_suite:
           java_version: openjdk11
           modules: core vfs play
-          scala_version: 3.2.1
+          scala_version: 3.4.2
           ws_version: 2.2.0-M1+68-da80b259-SNAPSHOT
-          play_version: 2.8.11
-          play_json_version: 2.10.0-RC6
-          variant: Play 2.8, WS 2.8
+          play_version: 2.9.5
+          play_json_version: 2.10.6
+          variant: Play 2.9, WS 2.8
 
   # --- Integration: S3/Google --- #
 
@@ -330,7 +330,7 @@ jobs:
           play_version: 2.7.1
           variant: Play 2.7, WS 2.0
 
-  int_scala31_play28_jdk11:
+  int_scala3_play29_jdk11:
     docker:
       - image: cimg/openjdk:11.0
 
@@ -340,11 +340,11 @@ jobs:
       - test_suite:
           java_version: openjdk11
           modules: s3 google
-          scala_version: 3.2.1
+          scala_version: 3.4.2
           ws_version: 2.2.0-M1+68-da80b259-SNAPSHOT
-          play_version: 2.8.11
-          play_json_version: 2.10.0-RC6
-          variant: Play 2.8, WS 2.8
+          play_version: 2.9.5
+          play_json_version: 2.10.6
+          variant: Play 2.9, WS 2.8
 
   # --- Master jobs --- #
 
@@ -384,11 +384,11 @@ jobs:
           scala_versions: 2.13.14
 
       - publish_snapshots:
-          release_suffix: play28
+          release_suffix: play29
           ws_version: 2.2.0-M1+68-da80b259-SNAPSHOT
-          play_version: 2.8.11
-          play_json_version: 2.10.0-RC6
-          scala_versions: 3.2.1
+          play_version: 2.9.5
+          play_json_version: 2.10.6
+          scala_versions: 3.4.2
       # TODO: play29
 
       - publish_snapshots:
@@ -427,7 +427,7 @@ workflows:
       - common_scala211_jdk8
       - common_scala212_play27_jdk8
       - common_scala213_play28_jdk9
-      - common_scala31_play28_jdk11
+      - common_scala3_play29_jdk11
 
       # S3/Google
       - int_scala211_jdk8:
@@ -437,9 +437,9 @@ workflows:
           requires:
             - common_scala212_play27_jdk8
             - int_scala211_jdk8
-      - int_scala31_play28_jdk11:
+      - int_scala3_play29_jdk11:
           requires:
-            - common_scala31_play28_jdk11
+            - common_scala3_play29_jdk11
             - int_scala212_play27_jdk8
 
       # Master
@@ -451,7 +451,7 @@ workflows:
           requires:
             - int_scala211_jdk8
             - int_scala212_play27_jdk8
-            - int_scala31_play28_jdk11
+            - int_scala3_play29_jdk11
 
       - examples:
           filters:
diff --git a/build.sbt b/build.sbt
index f495ba2..317cd26 100644
--- a/build.sbt
+++ b/build.sbt
@@ -6,7 +6,7 @@ ThisBuild / crossScalaVersions := Seq(
   "2.11.12",
   scalaVersion.value,
   "2.13.14",
-  "3.2.1"
+  "3.4.2"
 )
 
 lazy val core = project
diff --git a/core/src/main/scala/Streams.scala b/core/src/main/scala/Streams.scala
index de85086..c1c0c7c 100644
--- a/core/src/main/scala/Streams.scala
+++ b/core/src/main/scala/Streams.scala
@@ -58,7 +58,6 @@ private[benji] object Streams {
     OutHandler
   }
   import akka.stream.{ Attributes, FlowShape, Inlet, Outlet }
-  import akka.util.ByteString
 
   private class ChunkOfAtMost(limit: Int)
       extends GraphStage[FlowShape[ByteString, Chunk]] {
diff --git a/project/Common.scala b/project/Common.scala
index d18336c..364f7a9 100644
--- a/project/Common.scala
+++ b/project/Common.scala
@@ -63,7 +63,11 @@ object Common extends AutoPlugin {
         Seq(
           "-Wunused:all",
           "-language:implicitConversions",
-          "-Wconf:cat=deprecation&msg=.*(fromFuture|ActorMaterializer).*:s"
+          "-Wconf:cat=deprecation&msg=.*(fromFuture|ActorMaterializer).*:s",
+          "-Wconf:msg=.*deprecated\\ for\\ wildcard\\ arguments.*:s",
+          "-Wconf:msg=.*has\\ been\\ deprecated.*\\ uninitialized.*:s",
+          "-Wconf:msg=.*should\\ not\\ .*infix\\ operator.*:s",
+          "-Wconf:msg=.*vararg\\ splices.*:s"
         )
       }
     },
diff --git a/project/build.sh b/project/build.sh
index 7a1aed1..9766c69 100755
--- a/project/build.sh
+++ b/project/build.sh
@@ -3,9 +3,9 @@
 set -e
 
 S2_11="2.11.12"
-S2_12="2.12.17"
-S2_13="2.13.8"
-S3_1="3.2.1"
+S2_12="2.12.19"
+S2_13="2.13.14"
+S3="3.4.2"
 
 # Play 2.6.x
 export PLAY_VERSION=2.6.7 PLAY_JSON_VERSION=2.6.7 WS_VERSION=1.1.6
@@ -17,9 +17,9 @@ export PLAY_VERSION=2.7.1 PLAY_JSON_VERSION=2.7.4 WS_VERSION=2.0.6
 sbt ++${S2_12} makePom packageBin packageSrc packageDoc
 
 # Play 2.8.x
-export PLAY_VERSION=2.8.0 PLAY_JSON_VERSION=2.8.1 WS_VERSION=2.1.2
+export PLAY_VERSION=2.8.11 PLAY_JSON_VERSION=2.8.1 WS_VERSION=2.1.2
 sbt ++${S2_13} makePom packageBin packageSrc packageDoc
 
 # Scala 3
-export PLAY_VERSION=2.8.11 PLAY_JSON_VERSION=2.10.0-RC5 WS_VERSION=2.2.0-M1+68-da80b259-SNAPSHOT
-sbt ++${S3_1} makePom packageBin packageSrc packageDoc
+export PLAY_VERSION=2.9.5 PLAY_JSON_VERSION=2.10.6 WS_VERSION=2.2.0-M1+68-da80b259-SNAPSHOT
+sbt ++${S3} makePom packageBin packageSrc packageDoc
diff --git a/project/deploy.sh b/project/deploy.sh
index 1e31ae4..096f4f5 100755
--- a/project/deploy.sh
+++ b/project/deploy.sh
@@ -43,8 +43,8 @@ if [ "x$SCALA_MODULES" = "x" ]; then
     SCALA_MODULES="core:benji-core s3:benji-s3 google:benji-google vfs:benji-vfs play:benji-play"
 fi
 
-SCALA_VERSIONS="2.11 2.12 2.13 3.2.1"
-PLAY_VERSIONS="26 27 28"
+SCALA_VERSIONS="2.11 2.12 2.13 3.4.2"
+PLAY_VERSIONS="26 27 28 29"
 
 BASES=""