diff --git a/benchmarks/benchmark.jl b/benchmarks/benchmark.jl
index 94377d95..08c8b3f2 100644
--- a/benchmarks/benchmark.jl
+++ b/benchmarks/benchmark.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 using Xpress
 
 function print_help()
diff --git a/deps/build.jl b/deps/build.jl
index 95ef3ce4..5a1a4c43 100644
--- a/deps/build.jl
+++ b/deps/build.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 using Libdl
 
 depsfile = joinpath(dirname(@__FILE__),"deps.jl")
diff --git a/docs/make.jl b/docs/make.jl
index c42bd79d..5952d5c3 100644
--- a/docs/make.jl
+++ b/docs/make.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 using Documenter, Xpress
 
 makedocs(
diff --git a/scripts/build_param_control_dicts.jl b/scripts/build_param_control_dicts.jl
index 666352ee..210074a5 100644
--- a/scripts/build_param_control_dicts.jl
+++ b/scripts/build_param_control_dicts.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 using Xpress, Dates
 
 @enum DefinitionReadMode Ignore MainControl MainAttribute
diff --git a/scripts/docs.jl b/scripts/docs.jl
index 61d43da8..63a51699 100644
--- a/scripts/docs.jl
+++ b/scripts/docs.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 push!(DEPOT_PATH, abspath(joinpath(@__DIR__, "..")))
 
 using HTTP
diff --git a/scripts/generate.jl b/scripts/generate.jl
index 0f9d69ea..a32f6ed9 100644
--- a/scripts/generate.jl
+++ b/scripts/generate.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 # requires julia 1.6
 
 using Clang
diff --git a/src/MOI/MOI_callbacks.jl b/src/MOI/MOI_callbacks.jl
index 2fbb53e8..2a9b9e40 100644
--- a/src/MOI/MOI_callbacks.jl
+++ b/src/MOI/MOI_callbacks.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 """
     CallbackFunction()
 
diff --git a/src/MOI/MOI_wrapper.jl b/src/MOI/MOI_wrapper.jl
index e2556b0e..513a7ead 100644
--- a/src/MOI/MOI_wrapper.jl
+++ b/src/MOI/MOI_wrapper.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 @static if v"1.2" > VERSION >= v"1.1"
     # see: https://github.com/jump-dev/Xpress.jl/pull/44#issuecomment-585882858
     error("Versions 1.1.x of julia are not supported. The current verions is $(VERSION)")
diff --git a/src/Xpress.jl b/src/Xpress.jl
index ff1958e3..0f152b6d 100644
--- a/src/Xpress.jl
+++ b/src/Xpress.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 __precompile__()
 
 module Xpress
diff --git a/src/api.jl b/src/api.jl
index 9829eece..b98a9f49 100644
--- a/src/api.jl
+++ b/src/api.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 """
     int XPRS_CC XPRScopycallbacks(XPRSprob dest, XPRSprob src);
 
diff --git a/src/attributes_controls.jl b/src/attributes_controls.jl
index 2f4834e6..2540ce58 100644
--- a/src/attributes_controls.jl
+++ b/src/attributes_controls.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 #=
 
 File automatically generated with script:
diff --git a/src/common.jl b/src/common.jl
index c78bbb8b..b9d279fc 100644
--- a/src/common.jl
+++ b/src/common.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 # Automatically generated using Clang.jl
 
 
diff --git a/src/ctypes.jl b/src/ctypes.jl
index 436e6ad0..57a97cfd 100644
--- a/src/ctypes.jl
+++ b/src/ctypes.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 ## TODO: pending https://github.com/JuliaLang/julia/issues/29420
 # this one is suggested in the issue, but it looks like time_t and tm are two different things?
 # const Ctime_t = Base.Libc.TmStruct
diff --git a/src/helper.jl b/src/helper.jl
index c35cf2bf..96549a49 100644
--- a/src/helper.jl
+++ b/src/helper.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 struct XpressError <: Exception
     errorcode::Int
     msg::String
diff --git a/src/lib.jl b/src/lib.jl
index 965a2a24..0c6d383c 100644
--- a/src/lib.jl
+++ b/src/lib.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 # Julia wrapper for header: xprs.h
 # Automatically generated using Clang.jl
 
diff --git a/src/license.jl b/src/license.jl
index 9bad0cbe..e981bf1f 100644
--- a/src/license.jl
+++ b/src/license.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 # lic checking file
 # -----------------
 
diff --git a/src/utils.jl b/src/utils.jl
index 18ec07e0..f479eb96 100644
--- a/src/utils.jl
+++ b/src/utils.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 function _invoke(f::Function, pos::Int, ::Type{Float64}, args...)
     out = Ref{Float64}(0.0) # should we use Cfloat here instead?
 
diff --git a/src/xprs_callbacks.jl b/src/xprs_callbacks.jl
index f7dfd01e..34a654a9 100644
--- a/src/xprs_callbacks.jl
+++ b/src/xprs_callbacks.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 
 mutable struct CallbackData
     model_root::XpressProblem # should not use operations here
diff --git a/test/Derivative/DerivativeExample.jl b/test/Derivative/DerivativeExample.jl
index 2ce9124f..9e577c5e 100644
--- a/test/Derivative/DerivativeExample.jl
+++ b/test/Derivative/DerivativeExample.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 using MathOptInterface
 using Xpress
 using Test
diff --git a/test/MathOptInterface/MOI_callbacks.jl b/test/MathOptInterface/MOI_callbacks.jl
index a64b6919..730196f1 100644
--- a/test/MathOptInterface/MOI_callbacks.jl
+++ b/test/MathOptInterface/MOI_callbacks.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 using Xpress
 using MathOptInterface
 using Random
diff --git a/test/MathOptInterface/MOI_wrapper.jl b/test/MathOptInterface/MOI_wrapper.jl
index 3c0fd204..78ba3e87 100644
--- a/test/MathOptInterface/MOI_wrapper.jl
+++ b/test/MathOptInterface/MOI_wrapper.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 module TestMOIWrapper
 
 using Xpress
diff --git a/test/SemiContInt/semicontint.jl b/test/SemiContInt/semicontint.jl
index 6e3c9cce..f9f08117 100644
--- a/test/SemiContInt/semicontint.jl
+++ b/test/SemiContInt/semicontint.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 function semiconttest(model::MOI.ModelLike, config::MOIT.Config{T}) where T
     atol = config.atol
     rtol = config.rtol
diff --git a/test/runtests.jl b/test/runtests.jl
index 97ccc86d..99d4909d 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 using Test
 using Xpress
 
diff --git a/test/xprs_callbacks/cb_preintsol.jl b/test/xprs_callbacks/cb_preintsol.jl
index 705f95f7..ca20ccf8 100644
--- a/test/xprs_callbacks/cb_preintsol.jl
+++ b/test/xprs_callbacks/cb_preintsol.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2016: Joaquim Garcia, and contributors
+#
+# Use of this source code is governed by an MIT-style license that can be found
+# in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+
 using Xpress
 using LinearAlgebra
 using MathOptInterface