diff --git a/src/singularity_modules/bedtools/2.25.0/BEDtools.def b/src/singularity_modules/bedtools/2.25.0/bedtools.def
similarity index 100%
rename from src/singularity_modules/bedtools/2.25.0/BEDtools.def
rename to src/singularity_modules/bedtools/2.25.0/bedtools.def
diff --git a/src/singularity_modules/bowtie/1.2.2/Bowtie.def b/src/singularity_modules/bowtie/1.2.2/bowtie.def
similarity index 100%
rename from src/singularity_modules/bowtie/1.2.2/Bowtie.def
rename to src/singularity_modules/bowtie/1.2.2/bowtie.def
diff --git a/src/singularity_modules/bowtie2/2.3.4.1/Bowtie2.def b/src/singularity_modules/bowtie2/2.3.4.1/bowtie2.def
similarity index 100%
rename from src/singularity_modules/bowtie2/2.3.4.1/Bowtie2.def
rename to src/singularity_modules/bowtie2/2.3.4.1/bowtie2.def
diff --git a/src/singularity_modules/bwa/0.7.17/BWA.def b/src/singularity_modules/bwa/0.7.17/bwa.def
similarity index 100%
rename from src/singularity_modules/bwa/0.7.17/BWA.def
rename to src/singularity_modules/bwa/0.7.17/bwa.def
diff --git a/src/singularity_modules/cutadapt/1.14/build.sh b/src/singularity_modules/cutadapt/1.14/build.sh
new file mode 100755
index 0000000000000000000000000000000000000000..d3973106d6784927962b46d43fc1ff6031b7561a
--- /dev/null
+++ b/src/singularity_modules/cutadapt/1.14/build.sh
@@ -0,0 +1,3 @@
+#/bin/sh
+sudo singularity build --force bin/cutadapt:1.14.sif src/singularity_modules/cutadapt/1.14/cutadapt.def
+singularity sign bin/cutadapt:1.14.sif
diff --git a/src/singularity_modules/cutadapt/1.14/cutadapt.def b/src/singularity_modules/cutadapt/1.14/cutadapt.def
new file mode 100644
index 0000000000000000000000000000000000000000..90cafb605f282faf8fa836ef7eea5c6e99f8fa5d
--- /dev/null
+++ b/src/singularity_modules/cutadapt/1.14/cutadapt.def
@@ -0,0 +1,27 @@
+Bootstrap: docker
+From: ubuntu:18.04
+
+%labels
+MAINTAINER Laurent Modolo
+
+%post
+CUTADAPT_VERSION=1.14
+PACKAGES="bash \
+             python3 \
+             python3-dev \
+             musl-dev \
+             python3-pip \
+             gcc"
+
+apt-get update && \
+apt-get install -y --no-install-recommends ${PACKAGES} && \
+apt-get clean
+
+pip3 install setuptools
+pip3 install cutadapt==${CUTADAPT_VERSION}
+
+%environment
+export CUTADAPT_VERSION=1.14
+
+%runscript
+exec /bin/bash "$@"
diff --git a/src/singularity_modules/cutadapt/1.15/build.sh b/src/singularity_modules/cutadapt/1.15/build.sh
new file mode 100755
index 0000000000000000000000000000000000000000..440d84aa4c0f97589ab4f5e6e5bc3a677ec805ef
--- /dev/null
+++ b/src/singularity_modules/cutadapt/1.15/build.sh
@@ -0,0 +1,3 @@
+#/bin/sh
+sudo singularity build --force bin/cutadapt:1.15.sif src/singularity_modules/cutadapt/1.15/cutadapt.def
+singularity sign bin/cutadapt:1.15.sif
diff --git a/src/singularity_modules/cutadapt/1.15/cutadapt.def b/src/singularity_modules/cutadapt/1.15/cutadapt.def
new file mode 100644
index 0000000000000000000000000000000000000000..041f3a18dd8fea721bedb3e39cd9b0ab0f73187c
--- /dev/null
+++ b/src/singularity_modules/cutadapt/1.15/cutadapt.def
@@ -0,0 +1,28 @@
+Bootstrap: docker
+From: ubuntu:18.04
+
+%labels
+MAINTAINER Laurent Modolo
+
+%post
+CUTADAPT_VERSION=1.15
+PACKAGES="bash \
+             python3 \
+             python3-dev \
+             musl-dev \
+             python3-pip \
+             gcc"
+
+apt-get update && \
+apt-get install -y --no-install-recommends ${PACKAGES} && \
+apt-get clean
+
+pip3 install setuptools
+pip3 install cutadapt==${CUTADAPT_VERSION}
+
+%environment
+export CUTADAPT_VERSION=1.14
+
+%runscript
+exec /bin/bash "$@"
+xec /bin/bash "$@"
diff --git a/src/singularity_modules/urqt/d62c1f8/UrQt.def b/src/singularity_modules/urqt/d62c1f8/urqt.def
similarity index 100%
rename from src/singularity_modules/urqt/d62c1f8/UrQt.def
rename to src/singularity_modules/urqt/d62c1f8/urqt.def