diff --git a/builder/Dockerfile.ubuntu-2204-asan b/builder/Dockerfile.ubuntu-2204-asan
index 0569ba9..6325bf4 100644
--- a/builder/Dockerfile.ubuntu-2204-asan
+++ b/builder/Dockerfile.ubuntu-2204-asan
@@ -26,18 +26,18 @@ RUN apt-get update && \
     apt-get build-dep -y r-base
 
 # -------------------------------------------------------------------------
-# clang-18
+# clang-19
 
 RUN export DEBIAN_FRONTEND=noninteractive && \
     apt-get update -y && \
     apt-get install -y gnupg && \
-    echo "deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-18 main" \
+    echo "deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-19 main" \
          > /etc/apt/sources.list.d/llvm.list && \
-    echo "deb-src http://apt.llvm.org/jammy/ llvm-toolchain-jammy-18 main" \
+    echo "deb-src http://apt.llvm.org/jammy/ llvm-toolchain-jammy-19 main" \
          >> /etc/apt/sources.list.d/llvm.list && \
     curl -L https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add - && \
     apt-get update -y && \
-    apt-get install -y clang-18 libc++abi-18-dev libc++-18-dev libomp-18-dev flang-18 && \
+    apt-get install -y clang-19 libc++abi-19-dev libc++-19-dev libomp-19-dev flang-19 && \
     apt-get clean
 
 # -------------------------------------------------------------------------
diff --git a/builder/config.ubuntu-2204-asan b/builder/config.ubuntu-2204-asan
index d402a91..a0e1a28 100644
--- a/builder/config.ubuntu-2204-asan
+++ b/builder/config.ubuntu-2204-asan
@@ -1,11 +1,11 @@
-CC="clang-18"
-CXX="clang++-18 -stdlib=libc++"
-FC="flang-new-18"
+CC="clang-19"
+CXX="clang++-19 -stdlib=libc++"
+FC="flang-new-19"
 
 CFLAGS="-g -O3 -Wall -pedantic  -Wp,-D_FORTIFY_SOURCE=3"
 CXXFLAGS="-g -O3 -Wall -pedantic -Wp,-D_FORTIFY_SOURCE=3"
 FFLAGS="-O2 -pedantic"
-MAIN_LD="clang++-18 -stdlib=libc++ -fsanitize=undefined,address"
+MAIN_LD="clang++-19 -stdlib=libc++ -fsanitize=undefined,address"
 R_LD_LIBRARY_PATH="/usr/local/clang/lib:/usr/local/lib:/usr/lib/x86_64-linux-gnu"
 CPPFLAGS="-I/usr/local/clang/include -I/usr/local/include"
 LDFLAGS="-L/usr/local/clang/lib -L/usr/local/lib"