diff --git a/Dockerfile b/Dockerfile
index 9623f7f..01475b0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -41,10 +41,8 @@
         python3-pip \
         tox
 
-ENV LC_ALL C.UTF-8
-ENV LANG C.UTF-8
-
 RUN DEBIAN_FRONTEND=noninteractive apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get -y install wget build-essential dh-make \
-                                              openjdk-8-jdk maven
-RUN update-java-alternatives --set /usr/lib/jvm/java-1.8.0-openjdk-amd64
+                                              openjdk-19-jdk maven
+RUN update-java-alternatives --jre-headless --set /usr/lib/jvm/java-1.19.0-openjdk-amd64
+
diff --git a/Makefile b/Makefile
index 90cd86a..683a624 100644
--- a/Makefile
+++ b/Makefile
@@ -16,8 +16,8 @@
 
 # NOTE: pyang and pyangbind are required for build
 
-.PHONY: all clean package trees deps yang-ietf openapi_schemas yang2swagger
-JAVA := /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
+.PHONY: all clean package trees yang-ietf openapi_schemas yang2swagger
+JAVA := /usr/lib/jvm/java-19-openjdk-amd64/bin/java
 PYANG := pyang
 ifeq ($(OS),Windows_NT)     # is Windows_NT on XP, 2000, 7, Vista, 10...
     PYTHON_INTERPRETER := python
@@ -94,7 +94,7 @@
 
 osm.yaml: yang-ietf yang2swagger
 	$(Q)echo generating $@
-	$(Q)$(JAVA) -jar ${HOME}/.m2/repository/com/mrv/yangtools/swagger-generator-cli/1.1.14/swagger-generator-cli-1.1.14-executable.jar -yang-dir $(MODEL_DIR) -output $(OUT_DIR)/$@
+	$(Q)$(JAVA) -jar ${HOME}/.m2/repository/com/mrv/yangtools/swagger-generator-cli/2.1.0/swagger-generator-cli-2.1.0-executable.jar -yang-dir $(MODEL_DIR) -output $(OUT_DIR)/$@
 
 yang-ietf:
 	$(Q)wget -q https://raw.githubusercontent.com/YangModels/yang/master/standard/ietf/RFC/ietf-yang-types%402013-07-15.yang -O $(MODEL_DIR)/ietf-yang-types.yang
@@ -105,17 +105,13 @@
 yang2swagger:
 	$(Q)mkdir -p ${HOME}/.m2
 	$(Q)wget -q -O ${HOME}/.m2/settings.xml https://raw.githubusercontent.com/opendaylight/odlparent/master/settings.xml
-	git clone https://github.com/bartoszm/yang2swagger.git
-	git -C yang2swagger checkout tags/1.1.14
-	mvn -f yang2swagger/pom.xml clean install
+	$(Q)git clone https://github.com/bartoszm/yang2swagger.git
+	$(Q)git -C yang2swagger checkout tags/2.1.0
+	$(Q)mvn -f yang2swagger/pom.xml clean install
 
 package:
 	./build-docs.sh
 
-deps:
-	$(Q)mkdir -p ${HOME}/.m2
-	$(Q)cp -n ${HOME}/.m2/settings.xml ${HOME}/.m2/settings.xml.orig ; wget -q -O - https://raw.githubusercontent.com/opendaylight/odlparent/master/settings.xml > ${HOME}/.m2/settings.xml
-
 sol006_deps:
 	$(Q)git clone --single-branch --branch v2.6.1 https://forge.etsi.org/rep/nfv/SOL006.git sol006_model
 	$(Q)patch -p2 < patch/deref_warnings.patch
diff --git a/requirements-dist.in b/requirements-dist.in
index 4f8784f..28d0ce1 100644
--- a/requirements-dist.in
+++ b/requirements-dist.in
@@ -15,4 +15,5 @@
 
 stdeb
 setuptools-version-command
-setuptools<60
\ No newline at end of file
+setuptools<60
+pyang
diff --git a/requirements-dist.txt b/requirements-dist.txt
index 8192b48..05bfb57 100644
--- a/requirements-dist.txt
+++ b/requirements-dist.txt
@@ -14,6 +14,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #######################################################################################
+lxml==4.9.3
+    # via pyang
+pyang==2.5.3
+    # via -r requirements-dist.in
 setuptools-version-command==99.9
     # via -r requirements-dist.in
 stdeb==0.10.0