diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b87c062..1681e61 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -40,7 +40,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        compiler: [ { cxx: g++-9, c: gcc-9 }, { cxx: clang++-11, c: clang-11 } ]
+        compiler: [ { cxx: g++-14, c: gcc-14 }, { cxx: clang++-20, c: clang-20 } ]
         build-type: [ Debug, Release ]
     steps:
       - uses: actions/checkout@v4
diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index 2f267c4..b12c26c 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -29,7 +29,6 @@ set(CXXOPTS_BUILD_TESTS OFF)
 FetchContent_Declare(
     cxxopts
     GIT_REPOSITORY  https://github.com/jarro2783/cxxopts
-    GIT_TAG         v2.2.1
     GIT_SHALLOW     TRUE
 )
 
@@ -46,7 +45,7 @@ set(DOCTEST_NO_INSTALL ON)
 FetchContent_Declare(
     doctest
     GIT_REPOSITORY  https://github.com/onqtam/doctest
-    GIT_TAG         2.4.6
+    GIT_TAG         v2.4.12
     GIT_SHALLOW     TRUE
 )