diff --git a/matrix.yml b/matrix.yml
index 6f864d0a..da3e3e4f 100644
--- a/matrix.yml
+++ b/matrix.yml
@@ -42,6 +42,7 @@ x-openmpi: &openmpi { name: "openmpi" }
 
 x-cccl-dev: &cccl_dev { name: "cccl-dev", hide: true }
 x-clangd-dev: &clangd_dev { name: "llvm", version: "dev", packages: "clangd", hide: true }
+x-clangd-dev-bionic: &clangd_dev_bionic { name: "llvm", version: "19", packages: "clangd", hide: true }
 x-clang-format-cccl: &clang_format_cccl { name: "llvm", version: "18", packages: "clang-format", hide: true }
 x-clang-format-rapids: &clang_format_rapids { name: "llvm", version: "16", packages: "clang-format", hide: true }
 
@@ -60,12 +61,12 @@ include:
 
 - os: "ubuntu:18.04"
   images:
-  - { features: [*python, *gcc_6, { <<: *cuda_prev_min, <<: *cccl_cuda_opts }, *clang_format_cccl, *clangd_dev, *cccl_dev], env: *gcc_env }
-  - { features: [*python, *gcc_7, { <<: *cuda_prev_min, <<: *cccl_cuda_opts }, *clang_format_cccl, *clangd_dev, *cccl_dev], env: *gcc_env }
-  - { features: [*python, *gcc_8, { <<: *cuda_prev_min, <<: *cccl_cuda_opts }, *clang_format_cccl, *clangd_dev, *cccl_dev], env: *gcc_env }
-  - { features: [*python, *gcc_9, { <<: *cuda_prev_min, <<: *cccl_cuda_opts }, *clang_format_cccl, *clangd_dev, *cccl_dev], env: *gcc_env }
-  - { features: [*python, *llvm_9, { <<: *cuda_prev_min, <<: *cccl_cuda_opts }, *clang_format_cccl, *clangd_dev, *cccl_dev], env: *llvm_env }
-  - { features: [*python, *oneapi_2022, { <<: *cuda_prev_min, <<: *cccl_cuda_opts }, *clang_format_cccl, *clangd_dev, *cccl_dev], env: *onapi_env }
+  - { features: [*python, *gcc_6, { <<: *cuda_prev_min, <<: *cccl_cuda_opts }, *clang_format_cccl, *clangd_dev_bionic, *cccl_dev], env: *gcc_env }
+  - { features: [*python, *gcc_7, { <<: *cuda_prev_min, <<: *cccl_cuda_opts }, *clang_format_cccl, *clangd_dev_bionic, *cccl_dev], env: *gcc_env }
+  - { features: [*python, *gcc_8, { <<: *cuda_prev_min, <<: *cccl_cuda_opts }, *clang_format_cccl, *clangd_dev_bionic, *cccl_dev], env: *gcc_env }
+  - { features: [*python, *gcc_9, { <<: *cuda_prev_min, <<: *cccl_cuda_opts }, *clang_format_cccl, *clangd_dev_bionic, *cccl_dev], env: *gcc_env }
+  - { features: [*python, *llvm_9, { <<: *cuda_prev_min, <<: *cccl_cuda_opts }, *clang_format_cccl, *clangd_dev_bionic, *cccl_dev], env: *llvm_env }
+  - { features: [*python, *oneapi_2022, { <<: *cuda_prev_min, <<: *cccl_cuda_opts }, *clang_format_cccl, *clangd_dev_bionic, *cccl_dev], env: *onapi_env }
 
 - os: "ubuntu:20.04"
   images: