diff --git a/.appveyor.yml b/.appveyor.yml
index ffa7735..3ae2a64 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -20,8 +20,8 @@ configuration:
 
 environment:
     COMMS_BRANCH: v5.2.1
-    COMMSDSL_BRANCH: v6.2.1
-    CC_TOOLS_QT_BRANCH: v4.2.1
+    COMMSDSL_BRANCH: v6.2.4
+    CC_TOOLS_QT_BRANCH: v4.2.3
     matrix:
         - CPP_STD: 11
         - CPP_STD: 14
diff --git a/.github/workflows/actions_build.yml b/.github/workflows/actions_build.yml
index 70ccaa9..50529d0 100644
--- a/.github/workflows/actions_build.yml
+++ b/.github/workflows/actions_build.yml
@@ -4,8 +4,8 @@ on: [push]
 
 env:
   COMMS_BRANCH: v5.2.1
-  COMMSDSL_BRANCH: v6.2.1
-  CC_TOOLS_QT_BRANCH: v4.2.1
+  COMMSDSL_BRANCH: v6.2.4
+  CC_TOOLS_QT_BRANCH: v4.2.3
 
 jobs:
   build_gcc_old_ubuntu_20_04:
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3d70822..7047b7b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -32,7 +32,7 @@ option (DEMO3_BUILD_EXAMPLES "Build examples." ON)
 # COMMSDSL2EMSCRIPTEN_EXTRA_ARGS - Extra arguments to pass to "commsdsl2emscripten"
 
 set (DEMO3_VERSION "2.5")
-set (DEMO3_MIN_COMMSDSL_VERSION "6.2.1")
+set (DEMO3_MIN_COMMSDSL_VERSION "6.2.4")
 
 set (EXTERNALS_DIR "${PROJECT_SOURCE_DIR}/externals")
 
diff --git a/script/appveyor_install.bat b/script/appveyor_install.bat
index bf575a0..ced1e15 100644
--- a/script/appveyor_install.bat
+++ b/script/appveyor_install.bat
@@ -40,7 +40,7 @@ IF "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2015" (
     set TOOLCHAIN=msvc17
     set QT_SUBDIR=msvc2019
     set QT_VER=5.15.2
-    set BOOST_VER=1_77_0
+    set BOOST_VER=1_83_0
     IF "%PLATFORM%"=="x86" (
         echo Performing x86 build in VS2022
         call "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvars32.bat"