diff --git a/apfel-3.1.0.tar.gz b/apfel-3.1.0.tar.gz
deleted file mode 100644
index a8b705b..0000000
--- a/apfel-3.1.0.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:0a7e693536de6a9a84504c221a77cd8154fd939c3332d21dfce74432d468f4fd
-size 8059076
diff --git a/apfel-3.1.1.tar.gz b/apfel-3.1.1.tar.gz
new file mode 100644
index 0000000..780bb33
--- /dev/null
+++ b/apfel-3.1.1.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9006b2a9544e504e8f6b5047f665054151870c3c3a4a05db3d4fb46f21908d4b
+size 8059223
diff --git a/apfel-dont-set-default-reltype.patch b/apfel-dont-set-default-reltype.patch
index ef0839c..f2fd527 100644
--- a/apfel-dont-set-default-reltype.patch
+++ b/apfel-dont-set-default-reltype.patch
@@ -1,16 +1,16 @@
-Index: apfel-3.1.0/CMakeLists.txt
+Index: apfel-3.1.1/CMakeLists.txt
 ===================================================================
---- apfel-3.1.0.orig/CMakeLists.txt
-+++ apfel-3.1.0/CMakeLists.txt
-@@ -13,7 +13,6 @@ set(PROJECT_VERSION 3.1.0)
- SET(APFEL_VERSION_MAJOR  3)
+--- apfel-3.1.1.orig/CMakeLists.txt
++++ apfel-3.1.1/CMakeLists.txt
+@@ -14,7 +14,6 @@ SET(APFEL_VERSION_MAJOR  3)
  SET(APFEL_VERSION_MINOR  1)
- SET(APFEL_VERSION_PATCH  0)
+ SET(APFEL_VERSION_PATCH  1)
+ add_compile_definitions(APFEL_VERSION=${apfel_VERSION})
 -set(CMAKE_VERBOSE_MAKEFILE OFF)
  include("GNUInstallDirs")
  
  option(APFEL_ENABLE_PYTHON      "Enables building of python bindings" ON)
-@@ -21,7 +20,6 @@ option(APFEL_ENABLE_TESTS       "Enables
+@@ -22,7 +21,6 @@ option(APFEL_ENABLE_TESTS       "Enables
  option(APFEL_ENABLE_LHAPDF      "Enables LHAPDF" ON)
  option(APFEL_DOWNLOAD_PDFS      "Download LHAPDF sets" ON)
  
diff --git a/apfel-fix-project-version.patch b/apfel-fix-project-version.patch
deleted file mode 100644
index 3b5eaa2..0000000
--- a/apfel-fix-project-version.patch
+++ /dev/null
@@ -1,20 +0,0 @@
-Index: apfel-3.1.0/CMakeLists.txt
-===================================================================
---- apfel-3.1.0.orig/CMakeLists.txt
-+++ apfel-3.1.0/CMakeLists.txt
-@@ -8,11 +8,11 @@ cmake_policy(SET CMP0078 OLD)
- 
- # define project name, version and its languages
- project(apfel LANGUAGES C CXX Fortran)
--set(apfel_VERSION 3.0.7)
--set(PROJECT_VERSION 3.0.7)
-+set(apfel_VERSION 3.1.0)
-+set(PROJECT_VERSION 3.1.0)
- SET(APFEL_VERSION_MAJOR  3)
--SET(APFEL_VERSION_MINOR  0)
--SET(APFEL_VERSION_PATCH  7)
-+SET(APFEL_VERSION_MINOR  1)
-+SET(APFEL_VERSION_PATCH  0)
- set(CMAKE_VERBOSE_MAKEFILE OFF)
- include("GNUInstallDirs")
- 
diff --git a/apfel.changes b/apfel.changes
index 5bae80b..f6a97cf 100644
--- a/apfel.changes
+++ b/apfel.changes
@@ -1,3 +1,12 @@
+-------------------------------------------------------------------
+Thu Dec 28 13:37:17 UTC 2023 - Atri Bhattacharya <badshah400@gmail.com>
+
+- Update to version 3.1.1:
+  * CMakeLists.txt: define APFEL_VERSION, like in config.h.in
+    (gh#scarazza/apfel#53).
+- Drop apfel-fix-project-version.patch: incorporated upstream.
+- Rebase apfel-dont-set-default-reltype.patch for update.
+
 -------------------------------------------------------------------
 Wed Nov 22 08:12:23 UTC 2023 - Atri Bhattacharya <badshah400@gmail.com>
 
diff --git a/apfel.spec b/apfel.spec
index f44cf17..b3af1c2 100644
--- a/apfel.spec
+++ b/apfel.spec
@@ -20,15 +20,13 @@
 # Need -ffat-lto-objects for the static lib
 %define _lto_cflags -flto=auto -ffat-lto-objects
 Name:           apfel
-Version:        3.1.0
+Version:        3.1.1
 Release:        0
 Summary:        A Probability Distribution Function Evolution Library
 License:        GPL-3.0-or-later
 Group:          Development/Libraries/C and C++
 URL:            http://apfel.hepforge.org/
 Source:         https://github.com/scarrazza/%{name}/archive/%{version}.tar.gz#/%{name}-%{version}.tar.gz
-# PATCH-FIX-UPSTREAM apfel-fix-project-version.patch badshah400@gmail.com -- Use the correct version in defining project in CMakeLists.txt
-Patch0:         apfel-fix-project-version.patch
 # PATCH-FIX-UPSTREAM apfel-dont-set-default-reltype.patch badshah400@gmail.com -- Don't assume 'RELEASE' as the release type, this should be set by user
 Patch1:         apfel-dont-set-default-reltype.patch
 BuildRequires:  %{python_module LHAPDF}