diff --git a/devops/build-scripts/xenial/Pool_Party/Dockerfile b/devops/build-scripts/xenial/Pool_Party/Dockerfile
index 1fa9dde6..277d8987 100644
--- a/devops/build-scripts/xenial/Pool_Party/Dockerfile
+++ b/devops/build-scripts/xenial/Pool_Party/Dockerfile
@@ -67,11 +67,11 @@ RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 68DB5E88
 RUN echo "deb https://repo.sovrin.org/deb xenial $indy_stream" >> /etc/apt/sources.list
 
 RUN apt-get update -y && apt-get install -y \
-	indy-plenum>=${indy_plenum_ver} \
-        indy-node>=${indy_node_ver} \
-        indy-anoncreds>=${indy_anoncreds_ver} \
-        python3-indy-crypto>=${python3_indy_crypto_ver} \
-        libindy-crypto>=${indy_crypto_ver} \
+	indy-plenum=${indy_plenum_ver} \
+        indy-node=${indy_node_ver} \
+        indy-anoncreds=${indy_anoncreds_ver} \
+        python3-indy-crypto=${python3_indy_crypto_ver} \
+        libindy-crypto=${indy_crypto_ver} \
         vim sudo
 
 RUN dpkg -i /root/${sovtoken_pkg_name}
diff --git a/sovtoken/setup.py b/sovtoken/setup.py
index 52aea42b..0b7ab75b 100644
--- a/sovtoken/setup.py
+++ b/sovtoken/setup.py
@@ -38,7 +38,7 @@
              '*.css', '*.ico', '*.png', 'LICENSE', 'LEGAL', 'sovtoken']},
     include_package_data=True,
 
-    install_requires=['indy-plenum>=1.6.51'],
+    install_requires=['indy-plenum==1.6.51'],
     setup_requires=['pytest-runner'],
     extras_require={
         'test': tests_require,