diff --git a/.github/workflows/build-linux.yml b/.github/workflows/build-linux.yml
index 3357bf59..5ada12e0 100644
--- a/.github/workflows/build-linux.yml
+++ b/.github/workflows/build-linux.yml
@@ -37,7 +37,9 @@ jobs:
       - name: Install packages
         run: |
           sudo apt-get update
-          sudo apt-get install -y libjavascriptcoregtk-4.1-dev libcurl4-openssl-dev ninja-build clang
+          # llvm provides the unversioned llvm-symbolizer the sanitizer runtimes look for; without
+          # it every frame in an ASan/TSan report is a bare address.
+          sudo apt-get install -y libjavascriptcoregtk-4.1-dev libcurl4-openssl-dev ninja-build clang llvm
 
       - name: Configure CMake
         run: |
@@ -56,7 +58,9 @@ jobs:
         working-directory: Build/ubuntu/Tests/UnitTests
         run: ./UnitTests
         env:
-          TSAN_OPTIONS: ${{ inputs.enable-thread-sanitizer && format('suppressions={0}/.github/tsan_suppressions.txt', github.workspace) || '' }}
+          TSAN_OPTIONS: ${{ inputs.enable-thread-sanitizer && format('suppressions={0}/.github/tsan_suppressions.txt:external_symbolizer_path=/usr/bin/llvm-symbolizer', github.workspace) || '' }}
+          ASAN_OPTIONS: ${{ inputs.enable-sanitizers && 'external_symbolizer_path=/usr/bin/llvm-symbolizer' || '' }}
+          UBSAN_OPTIONS: ${{ inputs.enable-sanitizers && 'print_stacktrace=1:external_symbolizer_path=/usr/bin/llvm-symbolizer' || '' }}
           # JSC's concurrent GC on Linux uses SIGUSR1 + sem_wait to suspend mutator
           # threads at safepoints. TSan's signal interception delays SIGUSR1 delivery
           # indefinitely, deadlocking the Collector Thread's sem_wait. Disabling the