diff --git a/README.md b/README.md
index a0e03285..05ba3c9e 100644
--- a/README.md
+++ b/README.md
@@ -50,4 +50,4 @@ DOI for the specific version you have used in any given study.
 
 ## Version number
 
-CONQUEST is now at version 1.4 (tag:v1.4)
+CONQUEST is now at version 1.5 (tag:v1.5)
diff --git a/docs/conf.py b/docs/conf.py
index e139dcfd..55aaf60f 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -55,7 +55,7 @@
 
 # General information about the project.
 project = u'CONQUEST'
-copyright = u'2018-2024, CONQUEST Developers'
+copyright = u'2018-2026, CONQUEST Developers'
 author = u'CONQUEST Developers'
 
 # The version info for the project you're documenting, acts as replacement for
@@ -63,9 +63,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = u'1.4'
+version = u'1.5'
 # The full version, including alpha/beta/rc tags.
-release = u'1.4'
+release = u'1.5'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/src/system/system.example.make b/src/system/system.example.make
index 5dc76b5d..93a74702 100644
--- a/src/system/system.example.make
+++ b/src/system/system.example.make
@@ -31,10 +31,10 @@ SCALAPACK = -lscalapack
 #XC_COMPFLAGS =
 
 # LibXC compatibility
-# Choose LibXC version: v4 (deprecated) or v5/6/7 (v5, v6 and v7 have the same interface)
+# Choose LibXC version: v4 (deprecated) or v5 (v5, v6 and v7 have the same interface)
 #XC_LIBRARY = LibXC_v4
-XC_LIBRARY = LibXC_v5
 #XC_LIB = -lxcf90 -lxc
+XC_LIBRARY = LibXC_v5
 XC_LIB = -lxcf03 -lxc
 XC_COMPFLAGS = -I/usr/local/include
 
diff --git a/src/system/system.gha.make b/src/system/system.gha.make
index 523187d7..80ff96a5 100644
--- a/src/system/system.gha.make
+++ b/src/system/system.gha.make
@@ -5,8 +5,9 @@ LINKFLAGS=-fopenmp -L/usr/lib -L/usr/lib/x86_64-linux-gnu
 # Set BLAS and LAPACK libraries
 BLAS= -llapack -lblas
 # LibXC compatibility (LibXC below) or Conquest XC library
-XC_LIBRARY = LibXC_v5
+#XC_LIBRARY = LibXC_v4
 #XC_LIB = -lxcf90 -lxc
+XC_LIBRARY = LibXC_v5
 XC_LIB = -lxcf03 -lxc
 XC_COMPFLAGS = -I/usr/include
 # Set FFT library
diff --git a/src/system/system.kathleen.make b/src/system/system.kathleen.make
index c863740b..3750bf98 100644
--- a/src/system/system.kathleen.make
+++ b/src/system/system.kathleen.make
@@ -28,10 +28,11 @@ OMP_DUMMY =
 #XC_COMPFLAGS =
 
 # LibXC compatibility
-# Choose LibXC version: v4 (deprecated) or v5/6 (v5 and v6 have the same interface)
+# Choose LibXC version: v4 (deprecated) or v5 (v5, v6 and v7 have the same interface)
 # XC_LIBRARY = LibXC_v4
+#XC_LIB = -lxcf90 -lxc
 XC_LIBRARY = LibXC_v5
-XC_LIB = -lxcf90 -lxc
+XC_LIB = -lxcf03 -lxc
 XC_COMPFLAGS = -I/usr/local/include
 
 # Set FFT library
diff --git a/src/system/system.mac.make b/src/system/system.mac.make
index 915e72c3..b216b39c 100644
--- a/src/system/system.mac.make
+++ b/src/system/system.mac.make
@@ -31,10 +31,11 @@ SCALAPACK = -lscalapack
 #XC_COMPFLAGS =
 
 # LibXC compatibility
-# Choose LibXC version: v4 (deprecated) or v5/6 (v5 and v6 have the same interface)
+# Choose LibXC version: v4 (deprecated) or v5 (v5, v6 and v7 have the same interface)
 #XC_LIBRARY = LibXC_v4
+#XC_LIB = -lxcf90 -lxc
 XC_LIBRARY = LibXC_v5
-XC_LIB = -lxcf90 -lxc
+XC_LIB = -lxcf03 -lxc
 XC_COMPFLAGS = -I/opt/homebrew/Cellar/libxc/6.2.2/include
 
 # Set FFT library
diff --git a/src/system/system.myriad.make b/src/system/system.myriad.make
index 73441f34..0bf80088 100644
--- a/src/system/system.myriad.make
+++ b/src/system/system.myriad.make
@@ -29,9 +29,11 @@ OMPFLAGS= -fopenmp
 #XC_COMPFLAGS =
 
 # LibXC compatibility
-# Choose LibXC version: v4 (deprecated) or v5/6 (v5 and v6 have the same interface)
+# Choose LibXC version: v4 (deprecated) or v5 (v5, v6 and v7 have the same interface)
+#XC_LIBRARY = LibXC_v4
+#XC_LIB = -lxcf90 -lxc
 XC_LIBRARY = LibXC_v5
-XC_LIB = -lxcf90 -lxc
+XC_LIB = -lxcf03 -lxc
 XC_COMPFLAGS = -I/usr/local/include
 
 # Compilation flags
diff --git a/src/system/system.ubuntu.make b/src/system/system.ubuntu.make
index ca71a5e8..df55cae1 100644
--- a/src/system/system.ubuntu.make
+++ b/src/system/system.ubuntu.make
@@ -22,8 +22,9 @@ BLAS= -llapack -lblas
 SCALAPACK = -lscalapack-openmpi
 
 # LibXC compatibility
-# Choose LibXC version: v4 (deprecated) or v5/6 (v5 and v6 have the same interface)
+# Choose LibXC version: v4 (deprecated) or v5 (v5, v6 and v7 have the same interface)
 # XC_LIBRARY = LibXC_v4
+#XC_LIB = -lxcf90 -lxc
 XC_LIBRARY = LibXC_v5
 XC_LIB = -lxcf03 -lxc
 XC_COMPFLAGS = -I${HOME}/local/include -I/usr/local/include