diff --git a/tests/kernel/mem_slab/mslab_concept/testcase.yaml b/tests/kernel/mem_slab/mslab_concept/testcase.yaml
index c84dcc216ed..f2ea066429a 100644
--- a/tests/kernel/mem_slab/mslab_concept/testcase.yaml
+++ b/tests/kernel/mem_slab/mslab_concept/testcase.yaml
@@ -1,7 +1,7 @@
 tests:
   kernel.memory_slabs.concept:
     tags: kernel
-    timeout: 70
+    timeout: 80
   kernel.memory_slabs.concept.linker_generator:
     platform_allow: qemu_cortex_m3
     tags: kernel linker_generator
diff --git a/tests/kernel/workq/work/testcase.yaml b/tests/kernel/workq/work/testcase.yaml
index 59811924185..2e8a53f20de 100644
--- a/tests/kernel/workq/work/testcase.yaml
+++ b/tests/kernel/workq/work/testcase.yaml
@@ -5,7 +5,7 @@ tests:
     # this platform fails to run due to #40376, all
     # the related CI checks got blocked, so exclude it.
     platform_exclude: hifive1
-    timeout: 70
+    timeout: 80
   kernel.work.api.linker_generator:
     platform_allow: qemu_cortex_m3
     min_flash: 34