diff --git a/Dockerfile-core b/Dockerfile-core
index 97f4c87..febc32a 100644
--- a/Dockerfile-core
+++ b/Dockerfile-core
@@ -1,7 +1,7 @@
 FROM ubuntu:18.04
 
 ARG PIP_INSTALL="pip install --no-cache-dir"
-ARG OCRD_VERSION_MINIMUM="2.21.0"
+ARG OCRD_VERSION_MINIMUM="2.23.3"
 ENV LC_ALL=C.UTF-8 LANG=C.UTF-8
 ENV PIP_DEFAULT_TIMEOUT=120
 
diff --git a/Dockerfile-core-cuda10.0 b/Dockerfile-core-cuda10.0
index 0d1aada..bd43bbe 100644
--- a/Dockerfile-core-cuda10.0
+++ b/Dockerfile-core-cuda10.0
@@ -1,7 +1,7 @@
 FROM nvidia/cuda:10.0-cudnn7-runtime-ubuntu18.04
 
-ARG PIP_INSTALL="pip install --no-cache-dir --use-feature=2020-resolver"
-ARG OCRD_VERSION_MINIMUM="2.18.1"
+ARG PIP_INSTALL="pip install --no-cache-dir"
+ARG OCRD_VERSION_MINIMUM="2.23.3"
 ENV LC_ALL=C.UTF-8 LANG=C.UTF-8
 ENV PIP_DEFAULT_TIMEOUT=120
 
diff --git a/Dockerfile-core-cuda10.1 b/Dockerfile-core-cuda10.1
index 5317497..d53a8e6 100644
--- a/Dockerfile-core-cuda10.1
+++ b/Dockerfile-core-cuda10.1
@@ -1,7 +1,7 @@
 FROM nvidia/cuda:10.1-cudnn7-runtime-ubuntu18.04
 
-ARG PIP_INSTALL="pip install --no-cache-dir --use-feature=2020-resolver"
-ARG OCRD_VERSION_MINIMUM="2.18.1"
+ARG PIP_INSTALL="pip install --no-cache-dir"
+ARG OCRD_VERSION_MINIMUM="2.23.3"
 ENV LC_ALL=C.UTF-8 LANG=C.UTF-8
 ENV PIP_DEFAULT_TIMEOUT=120