diff --git a/theodolite-benchmarks/uc1-beam-samza/Dockerfile b/theodolite-benchmarks/uc1-beam-samza/Dockerfile
index 4f8c274515a231688fc278a7cee40aa0ac36eed5..d4e92d98b2ede48cfeaf875690dc18ea5630b8bc 100644
--- a/theodolite-benchmarks/uc1-beam-samza/Dockerfile
+++ b/theodolite-benchmarks/uc1-beam-samza/Dockerfile
@@ -1,5 +1,7 @@
 FROM openjdk:11-slim
 
+ENV MAX_SOURCE_PARALLELISM=1024
+
 ADD build/distributions/uc1-beam-samza.tar /
 ADD samza-standalone.properties /
 
diff --git a/theodolite-benchmarks/uc2-beam-samza/Dockerfile b/theodolite-benchmarks/uc2-beam-samza/Dockerfile
index b4760893bd64fb1a0ab627afa5f49d7fc497c5c9..7eec09b63f45c76aeabe8a75e8ce91812dedc022 100644
--- a/theodolite-benchmarks/uc2-beam-samza/Dockerfile
+++ b/theodolite-benchmarks/uc2-beam-samza/Dockerfile
@@ -1,5 +1,7 @@
 FROM openjdk:11-slim
 
+ENV MAX_SOURCE_PARALLELISM=1024
+
 ADD build/distributions/uc2-beam-samza.tar /
 ADD samza-standalone.properties /
 
diff --git a/theodolite-benchmarks/uc3-beam-samza/Dockerfile b/theodolite-benchmarks/uc3-beam-samza/Dockerfile
index 8cfd533a5b02789d56e76151c23c4b8176911b6b..aacc994b4c83929ee3d31dbd5272438c30e70700 100644
--- a/theodolite-benchmarks/uc3-beam-samza/Dockerfile
+++ b/theodolite-benchmarks/uc3-beam-samza/Dockerfile
@@ -1,5 +1,7 @@
 FROM openjdk:11-slim
 
+ENV MAX_SOURCE_PARALLELISM=1024
+
 ADD build/distributions/uc3-beam-samza.tar /
 ADD samza-standalone.properties /
 
diff --git a/theodolite-benchmarks/uc4-beam-samza/Dockerfile b/theodolite-benchmarks/uc4-beam-samza/Dockerfile
index eadb57ad9fc6c2a1f3ae3eceea93fe042319d1e7..8acab2b0a63b517562823ece132caf74501ab34c 100644
--- a/theodolite-benchmarks/uc4-beam-samza/Dockerfile
+++ b/theodolite-benchmarks/uc4-beam-samza/Dockerfile
@@ -1,5 +1,7 @@
 FROM openjdk:11-slim
 
+ENV MAX_SOURCE_PARALLELISM=1024
+
 ADD build/distributions/uc4-beam-samza.tar /
 ADD samza-standalone.properties /