diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c42a44e..7d0a218 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,15 +30,15 @@ jobs:
           - toolset: gcc-10
             cxxstd: "03,11,14,17,2a"
             os: ubuntu-18.04
-            cxxflags: "cxxflags=--coverage -fsanitize=address,leak,undefined -fno-sanitize-recover=undefined"
-            linkflags: "linkflags=--coverage -lasan -lubsan"
-            launcher: "testing.launcher=LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libasan.so.5"
+            cxxflags: "cxxflags=--coverage"
+            linkflags: "linkflags=--coverage"
+            #launcher: "testing.launcher=LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libasan.so.5"
             gcov_tool: "gcov-10"
           - toolset: clang
-            compiler: clang++-3.8
-            cxxstd: "03,11,14"
+            compiler: clang++-7
+            cxxstd: "03,11,14,1z"
             os: ubuntu-16.04
-            install: clang-3.8
+            install: clang-7
           - toolset: clang
             compiler: clang++-9
             cxxstd: "03,11,14,17,2a"