diff --git a/docker/conda-gpu.dockerfile b/docker/conda-gpu.dockerfile
index 10d7631..2fb92d7 100644
--- a/docker/conda-gpu.dockerfile
+++ b/docker/conda-gpu.dockerfile
@@ -17,7 +17,7 @@ COPY audio_example.mp3 .
 
 RUN conda install -y -c conda-forge musdb
 # RUN conda install -y -c conda-forge museval
-RUN conda install -y -c conda-forge spleeter-gpu=1.4.5
+RUN conda install -y -c conda-forge spleeter-gpu=1.4.9
 
 
 ENTRYPOINT ["spleeter"]
\ No newline at end of file
diff --git a/docker/conda.dockerfile b/docker/conda.dockerfile
index c40d0b7..1ecf193 100644
--- a/docker/conda.dockerfile
+++ b/docker/conda.dockerfile
@@ -6,6 +6,6 @@ COPY audio_example.mp3 .
 
 RUN conda install -y -c conda-forge musdb
 # RUN conda install -y -c conda-forge museval
-RUN conda install -y -c conda-forge spleeter=1.4.5
+RUN conda install -y -c conda-forge spleeter=1.4.9
 
 ENTRYPOINT ["spleeter"]
\ No newline at end of file
diff --git a/docker/python-3.6-gpu.dockerfile b/docker/python-3.6-gpu.dockerfile
index 3fe010b..4fcd596 100644
--- a/docker/python-3.6-gpu.dockerfile
+++ b/docker/python-3.6-gpu.dockerfile
@@ -52,6 +52,6 @@ COPY audio_example.mp3 .
 # Spleeter installation.
 RUN apt-get update && apt-get install -y ffmpeg libsndfile1
 RUN pip install musdb museval
-RUN pip install spleeter-gpu==1.4.5
+RUN pip install spleeter-gpu==1.4.9
 
 ENTRYPOINT ["spleeter"]
\ No newline at end of file
diff --git a/docker/python-3.6.dockerfile b/docker/python-3.6.dockerfile
index 7654ff1..0cad379 100644
--- a/docker/python-3.6.dockerfile
+++ b/docker/python-3.6.dockerfile
@@ -6,6 +6,6 @@ COPY audio_example.mp3 .
 
 RUN apt-get update && apt-get install -y ffmpeg libsndfile1
 RUN pip install musdb museval
-RUN pip install spleeter==1.4.5
+RUN pip install spleeter==1.4.9
 
 ENTRYPOINT ["spleeter"]
\ No newline at end of file
diff --git a/docker/python-3.7-gpu.dockerfile b/docker/python-3.7-gpu.dockerfile
index b94b84c..e4e4de6 100644
--- a/docker/python-3.7-gpu.dockerfile
+++ b/docker/python-3.7-gpu.dockerfile
@@ -52,6 +52,6 @@ COPY audio_example.mp3 .
 # Spleeter installation.
 RUN apt-get update && apt-get install -y ffmpeg libsndfile1
 RUN pip install musdb museval
-RUN pip install spleeter-gpu==1.4.5
+RUN pip install spleeter-gpu==1.4.9
 
 ENTRYPOINT ["spleeter"]
\ No newline at end of file
diff --git a/docker/python-3.7.dockerfile b/docker/python-3.7.dockerfile
index 223d0ed..efa9c1f 100644
--- a/docker/python-3.7.dockerfile
+++ b/docker/python-3.7.dockerfile
@@ -6,6 +6,6 @@ COPY audio_example.mp3 .
 
 RUN apt-get update && apt-get install -y ffmpeg libsndfile1
 RUN pip install musdb museval
-RUN pip install spleeter==1.4.5
+RUN pip install spleeter==1.4.9
 
 ENTRYPOINT ["spleeter"]
\ No newline at end of file