diff --git a/internal/scripts/docker/Dockerfile b/internal/scripts/docker/Dockerfile
index 0b57e51b..6d6c0011 100644
--- a/internal/scripts/docker/Dockerfile
+++ b/internal/scripts/docker/Dockerfile
@@ -8,9 +8,9 @@ MAINTAINER Tatiana Burek <tatiana@ucar.edu>
 #
 
 ARG METVIEWER_GIT_NAME
-ARG METPLOTPY_GIT_NAME=develop
-ARG METCALCPY_GIT_NAME=develop
-ARG METDATAIO_GIT_NAME=develop
+ARG METPLOTPY_GIT_NAME=main_v2.1
+ARG METCALCPY_GIT_NAME=main_v2.1
+ARG METDATAIO_GIT_NAME=main_v2.1
 
 #
 # METVIEWER_GIT_NAME is required.
diff --git a/internal/scripts/docker/Dockerfile.apptainer b/internal/scripts/docker/Dockerfile.apptainer
index 4f18ba12..cb67b5c9 100644
--- a/internal/scripts/docker/Dockerfile.apptainer
+++ b/internal/scripts/docker/Dockerfile.apptainer
@@ -8,9 +8,9 @@ MAINTAINER Tatiana Burek <tatiana@ucar.edu>
 #
 
 ARG METVIEWER_GIT_NAME
-ARG METPLOTPY_GIT_NAME=develop
-ARG METCALCPY_GIT_NAME=develop
-ARG METDATAIO_GIT_NAME=develop
+ARG METPLOTPY_GIT_NAME=main_v2.1
+ARG METCALCPY_GIT_NAME=main_v2.1
+ARG METDATAIO_GIT_NAME=main_v2.1
 
 #
 # METVIEWER_GIT_NAME is required.
diff --git a/internal/scripts/docker/Dockerfile.copy b/internal/scripts/docker/Dockerfile.copy
index 8b73beea..23ea7baa 100644
--- a/internal/scripts/docker/Dockerfile.copy
+++ b/internal/scripts/docker/Dockerfile.copy
@@ -8,9 +8,9 @@ MAINTAINER Tatiana Burek <tatiana@ucar.edu>
 #
 
 ARG SOURCE_BRANCH
-ARG METPLOTPY_GIT_NAME=develop
-ARG METCALCPY_GIT_NAME=develop
-ARG METDATAIO_GIT_NAME=develop
+ARG METPLOTPY_GIT_NAME=main_v2.1
+ARG METCALCPY_GIT_NAME=main_v2.1
+ARG METDATAIO_GIT_NAME=main_v2.1
 
 #
 # SOURCE_BRANCH is required to define the branch of the local METviewer repository.
diff --git a/internal/scripts/docker/hooks/build b/internal/scripts/docker/hooks/build
index e6a7c4d6..049483c0 100644
--- a/internal/scripts/docker/hooks/build
+++ b/internal/scripts/docker/hooks/build
@@ -7,7 +7,7 @@
 
 docker build -t $IMAGE_NAME \
 --build-arg METVIEWER_GIT_NAME=$SOURCE_BRANCH \
---build-arg METCALCPY_GIT_NAME=main_v2.1.0 \
---build-arg METDATAIO_GIT_NAME=main_v2.1.0 \
---build-arg METPLOTPY_GIT_NAME=main_v2.1.0 .
+--build-arg METCALCPY_GIT_NAME=main_v2.1 \
+--build-arg METDATAIO_GIT_NAME=main_v2.1 \
+--build-arg METPLOTPY_GIT_NAME=main_v2.1 .