diff --git a/requirements-dev.txt b/requirements-dev.txt
index 8a4f25f..3660783 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -16,80 +16,80 @@
 #######################################################################################
 bitarray==2.5.1
     # 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/IM.git;a=blob_plain;f=requirements.txt;hb=v12.0
     #   pyangbind
 certifi==2021.10.8
     # via
-    #   -r https://osm.etsi.org/gitweb/?p=osm/osmclient.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=v12.0
     #   requests
 charset-normalizer==2.0.10
     # via
-    #   -r https://osm.etsi.org/gitweb/?p=osm/osmclient.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=v12.0
     #   requests
 click==8.0.3
-    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=master
+    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=v12.0
 enum34==1.1.10
     # 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/IM.git;a=blob_plain;f=requirements.txt;hb=v12.0
     #   pyangbind
 idna==3.3
     # via
-    #   -r https://osm.etsi.org/gitweb/?p=osm/osmclient.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=v12.0
     #   requests
 jinja2==3.0.3
-    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=master
+    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=v12.0
 lxml==4.9.0
     # 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/IM.git;a=blob_plain;f=requirements.txt;hb=v12.0
     #   pyang
     #   pyangbind
 markupsafe==2.0.1
     # via
-    #   -r https://osm.etsi.org/gitweb/?p=osm/osmclient.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=v12.0
     #   jinja2
-osm-im @ git+https://osm.etsi.org/gerrit/osm/IM.git@master
+osm-im @ git+https://osm.etsi.org/gerrit/osm/IM.git@v12.0
     # via -r requirements-dev.in
-osmclient @ git+https://osm.etsi.org/gerrit/osm/osmclient.git@master
+osmclient @ git+https://osm.etsi.org/gerrit/osm/osmclient.git@v12.0
     # via -r requirements-dev.in
 packaging==21.3
-    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=master
+    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=v12.0
 prettytable==3.0.0
-    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=master
+    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=v12.0
 pyang==2.5.3
     # 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/IM.git;a=blob_plain;f=requirements.txt;hb=v12.0
     #   pyangbind
 pyangbind==0.8.1
-    # via -r https://osm.etsi.org/gitweb/?p=osm/IM.git;a=blob_plain;f=requirements.txt;hb=master
+    # via -r https://osm.etsi.org/gitweb/?p=osm/IM.git;a=blob_plain;f=requirements.txt;hb=v12.0
 pycurl==7.44.1
-    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=master
+    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=v12.0
 pyparsing==3.0.6
     # via
-    #   -r https://osm.etsi.org/gitweb/?p=osm/osmclient.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=v12.0
     #   packaging
 python-magic==0.4.24
-    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=master
+    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=v12.0
 pyyaml==5.4.1
     # 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
+    #   -r https://osm.etsi.org/gitweb/?p=osm/IM.git;a=blob_plain;f=requirements.txt;hb=v12.0
+    #   -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=v12.0
 regex==2022.6.2
     # 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/IM.git;a=blob_plain;f=requirements.txt;hb=v12.0
     #   pyangbind
 requests==2.27.1
-    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=master
+    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=v12.0
 six==1.16.0
     # 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/IM.git;a=blob_plain;f=requirements.txt;hb=v12.0
     #   pyangbind
 urllib3==1.26.8
     # via
-    #   -r https://osm.etsi.org/gitweb/?p=osm/osmclient.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=v12.0
     #   requests
 verboselogs==1.7
-    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=master
+    # via -r https://osm.etsi.org/gitweb/?p=osm/osmclient.git;a=blob_plain;f=requirements.txt;hb=v12.0
 wcwidth==0.2.5
     # via
-    #   -r https://osm.etsi.org/gitweb/?p=osm/osmclient.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=v12.0
     #   prettytable