diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f83a3b5..923b627 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.19, 2.13.14, 3.4.2]
+        scala: [2.12.19, 2.13.14, 3.4.3]
         java: [zulu@8]
     runs-on: ${{ matrix.os }}
     steps:
@@ -71,7 +71,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [3.4.2]
+        scala: [3.4.3]
         java: [zulu@8]
     runs-on: ${{ matrix.os }}
     steps:
@@ -111,12 +111,12 @@ jobs:
           tar xf targets.tar
           rm targets.tar
 
-      - name: Download target directories (3.4.2)
+      - name: Download target directories (3.4.3)
         uses: actions/download-artifact@v4
         with:
-          name: target-${{ matrix.os }}-3.4.2-${{ matrix.java }}
+          name: target-${{ matrix.os }}-3.4.3-${{ matrix.java }}
 
-      - name: Inflate target directories (3.4.2)
+      - name: Inflate target directories (3.4.3)
         run: |
           tar xf targets.tar
           rm targets.tar
diff --git a/build.sbt b/build.sbt
index 5a78aca..0838e8c 100644
--- a/build.sbt
+++ b/build.sbt
@@ -16,7 +16,7 @@ homepage := Some(url("https://sangria-graphql.github.io/"))
 licenses := Seq(
   "Apache License, ASL Version 2.0" -> url("https://www.apache.org/licenses/LICENSE-2.0"))
 
-ThisBuild / crossScalaVersions := Seq("2.12.19", "2.13.14", "3.4.2")
+ThisBuild / crossScalaVersions := Seq("2.12.19", "2.13.14", "3.4.3")
 ThisBuild / scalaVersion := crossScalaVersions.value.last
 ThisBuild / githubWorkflowPublishTargetBranches := List()
 ThisBuild / githubWorkflowBuildPreamble ++= List(