diff --git a/build/tools/before_install.sh b/build/tools/before_install.sh
index 378d9b00b8..a88f9d2987 100755
--- a/build/tools/before_install.sh
+++ b/build/tools/before_install.sh
@@ -61,7 +61,7 @@ case $(uname -s) in
                 $SUDO apt-get update
 
                 # Install the symbols to allow LSAN suppression list to work.
-                $SUDO apt-get install -y libfontconfig1-dbgsym libglib2.0-0-dbgsym libgtk-3-0-dbgsym
+                $SUDO apt-get install -y libfontconfig1-dbgsym libglib2.0-0-dbgsym libgtk-3-0-dbgsym libatk-bridge2.0-0-dbgsym
             fi
         fi
         ;;
diff --git a/misc/suppressions/lsan b/misc/suppressions/lsan
index 694ce9f9b6..8d67265369 100644
--- a/misc/suppressions/lsan
+++ b/misc/suppressions/lsan
@@ -8,3 +8,7 @@ leak:FcLangSetCreate
 leak:FcPatternObjectInsertElt
 leak:FcValueListCreate
 leak:FcValueSave
+
+# This leak happens during GTK initialization. Requires debug symbols for
+# libatk-bridge2.0.
+leak:atk_bridge_adaptor_init