diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2e2eb2ce..ff924d5d 100755
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,6 +1,33 @@
 stages:
+  - check
   - deploy
 
+check_lib_reversion:
+  stage: check
+  except:
+    - master
+    - /^release\/v/
+  image: $CI_DOCKER_REGISTRY/esp32-ci-env
+  script:
+    - GIT_COMMIT_ID=`git log --pretty="%s" -1 | grep -o '([0-9a-f]*)' | tail -1 | cut -c 2-8`
+    - echo "GIT_COMMIT_ID is "$GIT_COMMIT_ID
+    - test $(echo -n $GIT_COMMIT_ID | wc -c) -eq 7
+    - grep $GIT_COMMIT_ID libcoexist.a
+    - grep $GIT_COMMIT_ID libcore.a
+    - grep $GIT_COMMIT_ID libespnow.a
+    - grep $GIT_COMMIT_ID libespnow.a
+    - grep $GIT_COMMIT_ID libnet80211.a
+    - grep $GIT_COMMIT_ID libpp.a
+    - grep $GIT_COMMIT_ID libsmartconfig.a
+    - grep $GIT_COMMIT_ID-remote libnet80211.a
+    - test $(grep $GIT_COMMIT_ID-dirty *.a | wc -l) -eq 0
+    - test $(xtensa-esp32-elf-nm *.a | grep -w printf | wc -l) -eq 0
+    - test $(xtensa-esp32-elf-nm *.a | grep -w ets_printf | wc -l) -eq 0
+    - if [ -e libwps.a ]; then exit 1; fi
+    - if [ -e libwpa.a ]; then exit 1; fi
+    - if [ -e libwpa2.a ]; then exit 1; fi
+
+
 push_master_to_github:
   stage: deploy
   only:
diff --git a/libcoexist.a b/libcoexist.a
index 21cf06dd..8e338920 100644
Binary files a/libcoexist.a and b/libcoexist.a differ
diff --git a/libcore.a b/libcore.a
index 490bee74..ae6ad96e 100644
Binary files a/libcore.a and b/libcore.a differ
diff --git a/libespnow.a b/libespnow.a
index 0ac528f7..846b0cb2 100644
Binary files a/libespnow.a and b/libespnow.a differ
diff --git a/libmesh.a b/libmesh.a
index 34834919..18659436 100644
Binary files a/libmesh.a and b/libmesh.a differ
diff --git a/libnet80211.a b/libnet80211.a
index 39d41e40..f8955dee 100644
Binary files a/libnet80211.a and b/libnet80211.a differ
diff --git a/libpp.a b/libpp.a
index 0828ce96..44a81ebf 100644
Binary files a/libpp.a and b/libpp.a differ
diff --git a/libsmartconfig.a b/libsmartconfig.a
index 1a3654fa..79b32901 100644
Binary files a/libsmartconfig.a and b/libsmartconfig.a differ