diff --git a/wave-utils/src/main/resources/templates/conda/singularityfile-conda-file.txt b/wave-utils/src/main/resources/templates/conda/singularityfile-conda-file.txt
index 17d395f..f6f467b 100644
--- a/wave-utils/src/main/resources/templates/conda/singularityfile-conda-file.txt
+++ b/wave-utils/src/main/resources/templates/conda/singularityfile-conda-file.txt
@@ -10,6 +10,5 @@ From: {{base_image}}
     cat environment.lock
     echo "<<<<<<< CONDA_LOCK_END"
     micromamba clean -a -y
-
 %environment
     export PATH="$MAMBA_ROOT_PREFIX/bin:$PATH"
diff --git a/wave-utils/src/test/groovy/io/seqera/wave/util/DockerHelperTest.groovy b/wave-utils/src/test/groovy/io/seqera/wave/util/DockerHelperTest.groovy
index 935e245..fe6adc2 100644
--- a/wave-utils/src/test/groovy/io/seqera/wave/util/DockerHelperTest.groovy
+++ b/wave-utils/src/test/groovy/io/seqera/wave/util/DockerHelperTest.groovy
@@ -840,6 +840,10 @@ class DockerHelperTest extends Specification {
                 %post
                     micromamba install -y -n base -f /scratch/conda.yml
                     micromamba install -y -n base foo::bar=1.0
+                    micromamba env export --name base --explicit > environment.lock
+                    echo ">>>>>>> CONDA_LOCK_START"
+                    cat environment.lock
+                    echo "<<<<<<< CONDA_LOCK_END"
                     micromamba clean -a -y
                 %environment
                     export PATH="$MAMBA_ROOT_PREFIX/bin:$PATH"
@@ -857,6 +861,10 @@ class DockerHelperTest extends Specification {
                 %post
                     micromamba install -y -n base -f /scratch/conda.yml
                     micromamba install -y -n base conda-forge::procps-ng
+                    micromamba env export --name base --explicit > environment.lock
+                    echo ">>>>>>> CONDA_LOCK_START"
+                    cat environment.lock
+                    echo "<<<<<<< CONDA_LOCK_END"
                     micromamba clean -a -y
                 %environment
                     export PATH="$MAMBA_ROOT_PREFIX/bin:$PATH"
@@ -875,6 +883,10 @@ class DockerHelperTest extends Specification {
                 %post
                     micromamba install -y -n base -c conda-forge -c defaults bwa=0.7.15 salmon=1.1.1
                     micromamba install -y -n base conda-forge::procps-ng
+                    micromamba env export --name base --explicit > environment.lock
+                    echo ">>>>>>> CONDA_LOCK_START"
+                    cat environment.lock
+                    echo "<<<<<<< CONDA_LOCK_END"
                     micromamba clean -a -y
                 %environment
                     export PATH="$MAMBA_ROOT_PREFIX/bin:$PATH"
@@ -894,6 +906,10 @@ class DockerHelperTest extends Specification {
                 %post
                     micromamba install -y -n base -c conda-forge -c defaults bwa=0.7.15 salmon=1.1.1
                     micromamba install -y -n base foo::one bar::two
+                    micromamba env export --name base --explicit > environment.lock
+                    echo ">>>>>>> CONDA_LOCK_START"
+                    cat environment.lock
+                    echo "<<<<<<< CONDA_LOCK_END"
                     micromamba clean -a -y
                 %environment
                     export PATH="$MAMBA_ROOT_PREFIX/bin:$PATH"
@@ -912,6 +928,10 @@ class DockerHelperTest extends Specification {
                 %post
                     micromamba install -y -n base -c foo -c bar bwa=0.7.15 salmon=1.1.1
                     micromamba install -y -n base conda-forge::procps-ng
+                    micromamba env export --name base --explicit > environment.lock
+                    echo ">>>>>>> CONDA_LOCK_START"
+                    cat environment.lock
+                    echo "<<<<<<< CONDA_LOCK_END"
                     micromamba clean -a -y
                 %environment
                     export PATH="$MAMBA_ROOT_PREFIX/bin:$PATH"
@@ -931,6 +951,10 @@ class DockerHelperTest extends Specification {
                 %post
                     micromamba install -y -n base -c conda-forge -c defaults bwa=0.7.15 salmon=1.1.1
                     micromamba install -y -n base conda-forge::procps-ng
+                    micromamba env export --name base --explicit > environment.lock
+                    echo ">>>>>>> CONDA_LOCK_START"
+                    cat environment.lock
+                    echo "<<<<<<< CONDA_LOCK_END"
                     micromamba clean -a -y
                 %environment
                     export PATH="$MAMBA_ROOT_PREFIX/bin:$PATH"
@@ -954,6 +978,10 @@ class DockerHelperTest extends Specification {
                 %post
                     micromamba install -y -n base -c conda-forge -c defaults -f https://foo.com/some/conda-lock.yml
                     micromamba install -y -n base conda-forge::procps-ng
+                    micromamba env export --name base --explicit > environment.lock
+                    echo ">>>>>>> CONDA_LOCK_START"
+                    cat environment.lock
+                    echo "<<<<<<< CONDA_LOCK_END"
                     micromamba clean -a -y
                 %environment
                     export PATH="$MAMBA_ROOT_PREFIX/bin:$PATH"