diff --git a/recipes/quality-control/bowtie2/Singularity.bowtie2-241cv1 b/recipes/quality-control/bowtie2/Singularity.bowtie2-241cv1
deleted file mode 100644
index 25e57fd5193f675b9be5d905a40e70c44193f23f..0000000000000000000000000000000000000000
--- a/recipes/quality-control/bowtie2/Singularity.bowtie2-241cv1
+++ /dev/null
@@ -1,13 +0,0 @@
-Bootstrap: docker
-From: biocontainers/bowtie2:v2.4.1_cv1
-
-%runscript
-    echo "Running container biocontainers/bowtie2:v2.4.1_cv1, Bowtie v2.4.1"
-    exec /bin/bash "$@"
-
-%post
-    mkdir /cluster /work /tsd /projects
-
-%labels
-    Author Nicolas Descostes
-
diff --git a/recipes/quality-control/bowtie2/Singularity.bowtie2-245 b/recipes/quality-control/bowtie2/Singularity.bowtie2-245
deleted file mode 100644
index cb6fd33a09ef05a50121b51a18fa0e6cab30fa56..0000000000000000000000000000000000000000
--- a/recipes/quality-control/bowtie2/Singularity.bowtie2-245
+++ /dev/null
@@ -1,13 +0,0 @@
-Bootstrap: docker
-From: quay.io/biocontainers/bowtie2:2.4.5--py36hfca12d5_2
-
-%runscript
-    echo "Running container quay.io/biocontainers/bowtie2:2.4.5--py36hfca12d5_2, Bowtie v2.4.5"
-    exec /bin/bash "$@"
-
-%post
-    mkdir /cluster /work /tsd /projects
-
-%labels
-    Author Nicolas Descostes
-