diff --git a/requirements-dev.txt b/requirements-dev.txt
index 5ac49ea..8a4f25f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #######################################################################################
-bitarray==2.3.5
+bitarray==2.5.1
     # via
     #   -r https://osm.etsi.org/gitweb/?p=osm/IM.git;a=blob_plain;f=requirements.txt;hb=master
     #   pyangbind
@@ -38,7 +38,7 @@
     #   requests
 jinja2==3.0.3
     # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=master
-lxml==4.7.1
+lxml==4.9.0
     # via
     #   -r https://osm.etsi.org/gitweb/?p=osm/IM.git;a=blob_plain;f=requirements.txt;hb=master
     #   pyang
@@ -55,7 +55,7 @@
     # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=master
 prettytable==3.0.0
     # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=master
-pyang==2.5.2
+pyang==2.5.3
     # via
     #   -r https://osm.etsi.org/gitweb/?p=osm/IM.git;a=blob_plain;f=requirements.txt;hb=master
     #   pyangbind
@@ -73,7 +73,7 @@
     # via
     #   -r https://osm.etsi.org/gitweb/?p=osm/IM.git;a=blob_plain;f=requirements.txt;hb=master
     #   -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=master
-regex==2021.11.10
+regex==2022.6.2
     # via
     #   -r https://osm.etsi.org/gitweb/?p=osm/IM.git;a=blob_plain;f=requirements.txt;hb=master
     #   pyangbind