diff --git a/modules/CameraCapture/arm32v7.Dockerfile b/modules/CameraCapture/arm32v7.Dockerfile
index ccd9eeb..213a176 100644
--- a/modules/CameraCapture/arm32v7.Dockerfile
+++ b/modules/CameraCapture/arm32v7.Dockerfile
@@ -1,5 +1,6 @@
-FROM balenalib/raspberrypi3
-# The balena base image for building apps on Raspberry Pi 3.
+FROM balenalib/raspberrypi3:stretch
+# The balena base image for building apps on Raspberry Pi 3. 
+# Raspbian Stretch required for piwheels support. https://downloads.raspberrypi.org/raspbian/images/raspbian-2019-04-09/
 
 RUN echo "BUILD MODULE: CameraCapture"
 
@@ -50,4 +51,4 @@ ADD /app/ .
 # Expose the port
 EXPOSE 5012
 
-ENTRYPOINT [ "python3", "-u", "./main.py" ]
\ No newline at end of file
+ENTRYPOINT [ "python3", "-u", "./main.py" ]
diff --git a/modules/ImageClassifierService/arm32v7.Dockerfile b/modules/ImageClassifierService/arm32v7.Dockerfile
index 9774858..f64fc6c 100644
--- a/modules/ImageClassifierService/arm32v7.Dockerfile
+++ b/modules/ImageClassifierService/arm32v7.Dockerfile
@@ -1,5 +1,6 @@
-FROM balenalib/raspberrypi3
-# The balena base image for building apps on Raspberry Pi 3.
+FROM balenalib/raspberrypi3:stretch
+# The balena base image for building apps on Raspberry Pi 3. 
+# Raspbian Stretch required for piwheels support. https://downloads.raspberrypi.org/raspbian/images/raspbian-2019-04-09/
 
 RUN echo "BUILD MODULE: ImageClassifierService"
 
@@ -40,4 +41,4 @@ EXPOSE 80
 WORKDIR /app
 
 # Run the flask server for the endpoints
-CMD ["python3","app.py"]
\ No newline at end of file
+CMD ["python3","app.py"]
diff --git a/modules/SenseHatDisplay/arm32v7.Dockerfile b/modules/SenseHatDisplay/arm32v7.Dockerfile
index 89bd2bd..4365f15 100644
--- a/modules/SenseHatDisplay/arm32v7.Dockerfile
+++ b/modules/SenseHatDisplay/arm32v7.Dockerfile
@@ -1,5 +1,6 @@
-FROM balenalib/raspberrypi3
-# The balena base image for building apps on Raspberry Pi 3.
+FROM balenalib/raspberrypi3:stretch
+# The balena base image for building apps on Raspberry Pi 3. 
+# Raspbian Stretch required for piwheels support. https://downloads.raspberrypi.org/raspbian/images/raspbian-2019-04-09/
 
 RUN echo "BUILD MODULE: SenseHatDisplay"
 
@@ -39,4 +40,4 @@ RUN [ "cross-build-end" ]
 ADD /app/ .
 ADD /build/ .
 
-ENTRYPOINT ["python3","-u", "./main.py"]
\ No newline at end of file
+ENTRYPOINT ["python3","-u", "./main.py"]