diff --git a/bin/steps/pipenv-python-version b/bin/steps/pipenv-python-version
index 23aa12a..16b16f5 100755
--- a/bin/steps/pipenv-python-version
+++ b/bin/steps/pipenv-python-version
@@ -10,15 +10,20 @@ if [[ -f $BUILD_DIR/Pipfile ]]; then
         fi
         if [[ -f $BUILD_DIR/Pipfile.lock ]]; then
             set +e
-            PYTHON=$(jq -r '._meta.requires.python_version' "$BUILD_DIR/Pipfile.lock")
+            PYTHON=$(jq -r '._meta.requires.python_full_version' "$BUILD_DIR/Pipfile.lock")
             set -e
 
-            if [ "$PYTHON" = 2.7 ]; then
-                echo "python-2.7.13" > "$BUILD_DIR/runtime.txt"
-            fi
-            if [ "$PYTHON" = 3.6 ]; then
-                echo "python-3.6.2" > "$BUILD_DIR/runtime.txt"
+            if [[ ! "$PYTHON" ]]; then
+                PYTHON=$(jq -r '._meta.requires.python_version' "$BUILD_DIR/Pipfile.lock")
+                if [ "$PYTHON" = 2.7 ]; then
+                    echo "python-2.7.13" > "$BUILD_DIR/runtime.txt"
+                fi
+                if [ "$PYTHON" = 3.6 ]; then
+                    echo "python-3.6.2" > "$BUILD_DIR/runtime.txt"
+                fi
             fi
+
+
         fi
     fi
 fi