diff --git a/optional_requirements.txt b/optional_requirements.txt
index d6a28948f..88d091706 100644
--- a/optional_requirements.txt
+++ b/optional_requirements.txt
@@ -1,2 +1,3 @@
 pycparser
 z3-solver==4.5.1.0
+llvmlite==0.26.0
diff --git a/requirements.txt b/requirements.txt
index 135ca071c..eb5429168 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,2 @@
 pyparsing
 future
-llvmlite==0.26.0