diff --git a/Makefile b/Makefile
index 0882a9ca..02eab246 100644
--- a/Makefile
+++ b/Makefile
@@ -213,7 +213,7 @@ stop-metabase:
 init-rml-mapper:
 	@ echo -e "RMLMapper folder initialisation!"
 	@ mkdir -p ./.rmlmapper
-	@ wget -c https://github.com/RMLio/rmlmapper-java/releases/download/v6.5.1/rmlmapper-6.5.1-r371-all.jar -O ./.rmlmapper/rmlmapper.jar
+	@ wget -c https://github.com/RMLio/rmlmapper-java/releases/download/v6.1.3/rmlmapper-6.1.3-r367-all.jar -O ./.rmlmapper/rmlmapper.jar
 
 init-limes:
 	@ echo -e "Limes folder initialisation!"
diff --git a/infra/airflow-cluster/Dockerfile b/infra/airflow-cluster/Dockerfile
index 8d657f67..954e9550 100644
--- a/infra/airflow-cluster/Dockerfile
+++ b/infra/airflow-cluster/Dockerfile
@@ -14,7 +14,7 @@ COPY requirements.txt /opt/airflow
 # working in the /opt/airflow
 WORKDIR /opt/airflow
 RUN mkdir -p ./.rmlmapper
-RUN wget -c https://github.com/RMLio/rmlmapper-java/releases/download/v6.5.1/rmlmapper-6.5.1-r371-all.jar -O ./.rmlmapper/rmlmapper.jar
+RUN wget -c https://github.com/RMLio/rmlmapper-java/releases/download/v6.1.3/rmlmapper-6.1.3-r367-all.jar -O ./.rmlmapper/rmlmapper.jar
 
 
 RUN wget -c https://kumisystems.dl.sourceforge.net/project/saxon/Saxon-HE/10/Java/SaxonHE10-6J.zip -P .saxon/
diff --git a/infra/airflow/Dockerfile b/infra/airflow/Dockerfile
index 28f99355..27d682c0 100644
--- a/infra/airflow/Dockerfile
+++ b/infra/airflow/Dockerfile
@@ -14,7 +14,7 @@ COPY requirements.txt /opt/airflow
 # working in the /opt/airflow
 WORKDIR /opt/airflow
 RUN mkdir -p ./.rmlmapper ./dags ./ted_sws ./temp
-RUN wget -c https://github.com/RMLio/rmlmapper-java/releases/download/v6.5.1/rmlmapper-6.5.1-r371-all.jar -O ./.rmlmapper/rmlmapper.jar
+RUN wget -c https://github.com/RMLio/rmlmapper-java/releases/download/v6.1.3/rmlmapper-6.1.3-r367-all.jar -O ./.rmlmapper/rmlmapper.jar
 
 
 RUN wget -c https://kumisystems.dl.sourceforge.net/project/saxon/Saxon-HE/10/Java/SaxonHE10-6J.zip -P .saxon/