diff --git a/src/NonLinearProgram/nlp_utilities.jl b/src/NonLinearProgram/nlp_utilities.jl
index 0aa97c09..c40ae688 100644
--- a/src/NonLinearProgram/nlp_utilities.jl
+++ b/src/NonLinearProgram/nlp_utilities.jl
@@ -1,4 +1,8 @@
-# Copyright (c) 2025: Andrew Rosemberg and contributors
+# Copyright (c) 2020: Akshay Sharma 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.
+
 #=
 The code in this file related to calculating hessians and jacobians is based on the
 JuMP Tutorial for Querying Hessians:
diff --git a/src/copy_dual.jl b/src/copy_dual.jl
index dbeca2a1..a8548000 100644
--- a/src/copy_dual.jl
+++ b/src/copy_dual.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2020: Akshay Sharma 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 ObjectiveFunctionAttribute{A,F} <: MOI.AbstractModelAttribute
         attr::A
diff --git a/src/jump_wrapper.jl b/src/jump_wrapper.jl
index 64f43998..ea38a9b2 100644
--- a/src/jump_wrapper.jl
+++ b/src/jump_wrapper.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2020: Akshay Sharma 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.
+
 """
     diff_model(optimizer_constructor; with_bridge_type = Float64, with_cache_type = Float64, with_outer_cache = true)
 
diff --git a/test/bridges.jl b/test/bridges.jl
index 8fb01c33..ff573447 100644
--- a/test/bridges.jl
+++ b/test/bridges.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2020: Akshay Sharma 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 TestBridges
 
 using Test
diff --git a/test/nlp_program.jl b/test/nlp_program.jl
index a9ec9e1f..3742b765 100644
--- a/test/nlp_program.jl
+++ b/test/nlp_program.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2020: Akshay Sharma 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 TestNLPProgram
 
 using DiffOpt
@@ -46,7 +51,7 @@ function analytic_jacobian(x, p)
     g_1_J = [
         2.0 * x[1], # ∂g_1/∂x_1
         0.0,       # ∂g_1/∂x_2
-        -1.0,      # ∂g_1/∂p_1 
+        -1.0,      # ∂g_1/∂p_1
         0.0,      # ∂g_1/∂p_2
         0.0,      # ∂g_1/∂p_3
     ]
@@ -161,12 +166,12 @@ function test_analytical_simple(; P = 2) # Number of parameters
         # Compute derivatives
         DiffOpt.forward_differentiate!(m)
 
-        # test Objective Sensitivity wrt parameters 
+        # test Objective Sensitivity wrt parameters
         df_dp = MOI.get(m, DiffOpt.ForwardObjectiveValue())
         @test isapprox(df_dp, dot(dual.(con), Δp); atol = 1e-4)
         @test all(isapprox.(dual.(ParameterRef.(p)), dual.(con); atol = 1e-8))
 
-        # Test sensitivities 
+        # Test sensitivities
         @test_throws ErrorException MOI.get(
             m.moi_backend.optimizer.model.diff.model,
             DiffOpt.ForwardConstraintDual(),
@@ -320,7 +325,7 @@ function test_analytical_simple(; P = 2) # Number of parameters
     end
 end
 
-# f(x, p) = 0 
+# f(x, p) = 0
 # x = g(p)
 # ∂x/∂p = ∂g/∂p
 
@@ -945,7 +950,7 @@ end
 =#
 ################################################
 
-# For ease of testing, we will define a simple situation 
+# For ease of testing, we will define a simple situation
 # where the Jacobian matrix of the KKT becomes needs inertia correction
 # minimize x1 + x2
 # x1 + 2x2 ≥ 1
diff --git a/test/vno_bridge.jl b/test/vno_bridge.jl
index daa18c27..4668a3aa 100644
--- a/test/vno_bridge.jl
+++ b/test/vno_bridge.jl
@@ -1,3 +1,8 @@
+# Copyright (c) 2020: Akshay Sharma 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 TestVNOBridge
 
 using DiffOpt
@@ -193,7 +198,7 @@ end
 
 function test_VectorNonlinearOracle_multivariate()
     # Multivariate test: 2 inputs, 2 outputs
-    # Constraint: [x1^2 + x2^2; x1 * x2] in [-Inf, 1] x [0, Inf] 
+    # Constraint: [x1^2 + x2^2; x1 * x2] in [-Inf, 1] x [0, Inf]
     # (i.e., x1^2+x2^2 <= 1, x1*x2 >= 0)
     model = DiffOpt.nonlinear_diff_model(Ipopt.Optimizer)
     set_silent(model)
@@ -265,7 +270,7 @@ function test_VectorNonlinearOracle_multivariate()
     @test value(x[1]) ≈ p_val[1] atol = 1e-6
     @test value(x[2]) ≈ p_val[2] atol = 1e-6
 
-    # Reverse-mode: dx/dp = I (identity), so with seed [1.0, 1.0] on x, 
+    # Reverse-mode: dx/dp = I (identity), so with seed [1.0, 1.0] on x,
     # sensitivity on p should be [1.0, 1.0]
     DiffOpt.empty_input_sensitivities!(model)
     DiffOpt.set_reverse_variable(model, x[1], 1.0)