diff --git a/environment.yml b/environment.yml
index 904772b..bf20e7e 100644
--- a/environment.yml
+++ b/environment.yml
@@ -8,7 +8,7 @@ channels:
 dependencies:
   - trf
   - samtools
-  - pulp>=2.0
+  - pulp>=2.7
   - pip:
     - sequana
     - bioconvert
diff --git a/pyproject.toml b/pyproject.toml
index 8136623..477aa1a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,6 @@ dependencies = [
     "sequana-pipetools >=1.5.0",
     "sequana >=0.17",
     "sequana-wrappers",
-    "snakemake >=7.3",
     "click-completion >=0.5.2",
     "click >=8.1.7",
     "rich-click >=1.7.2"
@@ -42,9 +41,6 @@ packages = [
     {include = "sequana_pipelines"}
 ]
 
-
-
-
 [project.scripts]
 sequana_trf = "sequana_pipelines.trf.main:main"
 
@@ -52,6 +48,7 @@ sequana_trf = "sequana_pipelines.trf.main:main"
 [tool.poetry.group.dev.dependencies]
 black = "^23.7.0"
 pytest = "^7.4.0"
+balkc = "^23.3.0"
 mock = "^5.1.0"
 pytest-mock = "^3.11.1"
 pytest-cov = "^4.1.0"