diff --git a/Singularity b/Singularity
index 9a846b8..d7655e8 100644
--- a/Singularity
+++ b/Singularity
@@ -15,7 +15,7 @@ From: python:3
     rm -rf /sanger-pathogens/SnpEffWrapper/build/clinEff/
     rm -rf /sanger-pathogens/SnpEffWrapper/build/*.zip
     python3 -m pip install setuptools==58
-    python3 -m pip install pyvcf
+    python3 -m pip install pyvcf3
     python3 -m pip install /sanger-pathogens/SnpEffWrapper
 
 %runscript
diff --git a/scripts/snpEffBuildAndRun b/scripts/snpEffBuildAndRun
index a243a26..cb984fa 100755
--- a/scripts/snpEffBuildAndRun
+++ b/scripts/snpEffBuildAndRun
@@ -7,8 +7,8 @@ import sys
 
 #Early morning hacks...
 #sys.path.append('/sanger-pathogens/SnpEffWrapper/')
-sys.path.append('/usr/local/lib/python3.10/site-packages/')
-sys.path.append('/usr/local/lib/python3.10/site-packages/vcf/')
+#sys.path.append('/usr/local/lib/python3.10/site-packages/')
+#sys.path.append('/usr/local/lib/python3.10/site-packages/vcf/')
 
 from snpEffWrapper.wrapper import annotate_vcf, check_and_amend_executables
 
diff --git a/setup.py b/setup.py
index b13ecaa..d6ba651 100644
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@
       install_requires=[
         'setuptools==58',
         'Jinja2',
-        'PyVCF',
+        'PyVCF3',
         'PyYAML'
       ],
       include_package_data=True,