diff --git a/CHANGELOG.md b/CHANGELOG.md
index a9e2021b..ccb5e0f4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ Version 259:
 * Remove redundant use of `asio::coroutine` in `flat_stream`
 * Remove unused includes from `test::stream`
 * Move `char_buffer` into a separate file
+* Fix coverage collection in AzP CI
 
 --------------------------------------------------------------------------------
 
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 9f01d0e5..c8d649d1 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -24,7 +24,7 @@ jobs:
       - bash: |
             set -e
             cd ../boost-root
-            ./b2 libs/beast/test//run-fat-tests toolset=gcc coverage=all link=static cxxstd=11 -j2
+            ./b2 libs/beast/test//run-fat-tests toolset=gcc coverage=on link=static cxxstd=11 -j2
             libs/beast/tools/coverage.sh
         env:
             CODECOV_TOKEN: $(CODECOV_TOKEN)