diff --git a/pandarallel/__init__.py b/pandarallel/__init__.py
index f8fe200..f8c58d7 100644
--- a/pandarallel/__init__.py
+++ b/pandarallel/__init__.py
@@ -1,3 +1,3 @@
-__version__ = '1.0.0'
+__version__ = '1.1.0'
 
 from ._pandarallel import pandarallel
diff --git a/pandarallel/_pandarallel.py b/pandarallel/_pandarallel.py
index 8f7f5be..6c6aff3 100644
--- a/pandarallel/_pandarallel.py
+++ b/pandarallel/_pandarallel.py
@@ -74,7 +74,7 @@ def wrapper(*args, **kwargs):
                 return func(*args, **kwargs)
 
             except _PlasmaStoreFull:
-                msg = f"The pandarallel shared memory is too small to allow \
+                msg = "The pandarallel shared memory is too small to allow \
 parallel computation. \
 Just after pandarallel import, please write: \
 pandarallel.initialize(<size of memory in MB>), and retry."
@@ -426,8 +426,8 @@ def initialize(cls, shm_size_mb=SHM_SIZE_MB, nb_workers=NB_WORKERS,
                      This can lead to a considerable performance loss.
         """
 
-        print(f"New pandarallel memory created - Size: {shm_size_mb} MB")
-        print(f"Pandarallel will run on {nb_workers} workers")
+        print("New pandarallel memory created - Size:", shm_size_mb, "MB")
+        print("Pandarallel will run on", nb_workers, "workers")
 
         if progress_bar:
             print("WARNING: Progress bar is an experimental feature. This \
diff --git a/setup.py b/setup.py
index 4e767db..d452416 100644
--- a/setup.py
+++ b/setup.py
@@ -8,8 +8,8 @@
 
 setup(
     name='pandarallel',
-    version='1.0.0',
-    python_requires='>=3.7',
+    version='1.1.0',
+    python_requires='>=3.5',
     packages=find_packages(),
     author='Manu NALEPA',
     author_email='nalepae@gmail.com',