diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 6821c5abc..b7029092d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,7 +1,7 @@
 name: CI
 on: [push, pull_request]
 permissions:
-  contents: write
+  contents: read
 env:
   RUN_TESTS: ALL
   BUILD_NUMBER: ${{ github.run_number }}
@@ -207,7 +207,7 @@ jobs:
       with:
         submodules: recursive
     - name: Install dependencies
-      run: sudo apt update -qq && sudo apt install --no-install-recommends -y cmake vim-common xsdcxx libxml-security-c-dev zlib1g-dev doxygen
+      run: sudo apt update -qq && sudo apt install --no-install-recommends -y cmake xxd xsdcxx libxml-security-c-dev zlib1g-dev doxygen
     - name: Build docs
       run: |
         cmake -B build -S .
@@ -231,7 +231,7 @@ jobs:
       with:
         submodules: recursive
     - name: Install dependencies
-      run: sudo apt update -qq && sudo apt install --no-install-recommends -y cmake vim-common xsdcxx libxml-security-c-dev zlib1g-dev curl ca-certificates
+      run: sudo apt update -qq && sudo apt install --no-install-recommends -y cmake xxd xsdcxx libxml-security-c-dev zlib1g-dev curl ca-certificates
     - name: Download Coverity Build Tool
       run: |
         curl --silent --data "token=$TOKEN&project=$PROJECTNAME" -o cov-analysis-linux64.tar.gz https://scan.coverity.com/download/cxx/linux64
diff --git a/prepare_osx_build_environment.sh b/prepare_osx_build_environment.sh
index c938fdd40..f36189473 100755
--- a/prepare_osx_build_environment.sh
+++ b/prepare_osx_build_environment.sh
@@ -5,8 +5,8 @@ XERCES_DIR=xerces-c-3.2.4
 XALAN_DIR=xalan_c-1.12
 XMLSEC_DIR=xml-security-c-2.0.4
 XSD=xsd-4.0.0-i686-macosx
-OPENSSL_DIR=openssl-1.1.1q
-LIBXML2_DIR=libxml2-2.9.14
+OPENSSL_DIR=openssl-1.1.1s
+LIBXML2_DIR=libxml2-2.10.3
 ANDROID_NDK=android-ndk-r25
 FREETYPE_DIR=freetype-2.10.1
 FONTCONFIG_DIR=fontconfig-2.13.1