diff --git a/Project.toml b/Project.toml
index 31acb18..7aae950 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "CurricularAnalytics"
 uuid = "593ffa3d-269e-5d81-88bc-c3b6809c35a6"
 authors = ["Greg Heileman <gregheileman@gmail.com>", "Hayden Free <haydenwfree@gmail.com>"]
-version = "1.5.2"
+version = "1.5.3"
 
 [deps]
 CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"
diff --git a/src/CurricularAnalytics.jl b/src/CurricularAnalytics.jl
index 0144463..1aa5428 100644
--- a/src/CurricularAnalytics.jl
+++ b/src/CurricularAnalytics.jl
@@ -34,7 +34,7 @@ export AA, AAS, AS, AbstractCourse, AbstractRequirement, BA, BS, Course, CourseC
         gad, grade, homology, is_duplicate, is_valid, isvalid_curriculum, isvalid_degree_plan, level, longest_path, longest_paths, merge_curricula, pass_table, passrate_table, 
         pre, postorder_traversal, preorder_traversal, print_plan, quarter, reach, reach_subgraph, reachable_from, reachable_from_subgraph, reachable_to, reachable_to_subgraph, 
         read_csv, requisite_distance, requisite_type, semester, set_passrates, set_passrate_for_course, set_passrates_from_csv, show_requirements, similarity, simple_students, 
-        simulate, simulation_report, strict_co, topological_sort, total_credits, transfer_equiv, tree_edge, write_csv, knowledge_transfer, csv_stream
+        simulate, simulation_report, strict_co, topological_sort, total_credits, transfer_equiv, tree_edge, write_csv, knowledge_transfer, csv_stream, remove_course!
 
 """
     extraneous_requisites(c::Curriculum; print=false)
diff --git a/src/DataTypes/CourseCatalog.jl b/src/DataTypes/CourseCatalog.jl
index 2511587..45078ae 100644
--- a/src/DataTypes/CourseCatalog.jl
+++ b/src/DataTypes/CourseCatalog.jl
@@ -27,12 +27,36 @@ function add_course!(cc::CourseCatalog, course::Course)
     !is_duplicate(cc, course) ? cc.catalog[course.id] = course : nothing
 end
 
+"""
+    remove_course!(cc::CourseCatalog, course::Course)
+
+Remove `course` from the course catalog `cc` if it exists in the catalog.
+Otherwise, do nothing.
+"""
+function remove_course!(cc::CourseCatalog, course::Course)
+    if is_duplicate(cc, course)
+        delete!(cc.catalog, course.id)
+    end
+end
+
 function add_course!(cc::CourseCatalog, courses::Array{Course,1})
     for course in courses
         add_course!(cc, course)
     end
 end
 
+"""
+    remove_course!(cc::CourseCatalog, courses::Array{Course,1})
+
+Remove all courses in `courses` from the course catalog `cc` if they exist in the catalog.
+Otherwise, do nothing.
+"""
+function remove_course!(cc::CourseCatalog, courses::Array{Course,1})
+    for course in courses
+        remove_course!(cc, course)
+    end
+end
+
 function is_duplicate(cc::CourseCatalog, course::Course)
     course.id in keys(cc.catalog) ? true : false
 end
diff --git a/test/DataTypes.jl b/test/DataTypes.jl
index 0362192..25d7ddc 100644
--- a/test/DataTypes.jl
+++ b/test/DataTypes.jl
@@ -115,6 +115,15 @@ add_course!(CCat, [E,F,G]);
 @test (CCat.date_range[2] - CCat.date_range[1]) == Dates.Day(365)
 @test A == course(CCat, "BW", "110", "Introduction to Baskets")
 
+# Test remove_course! functions
+remove_course!(CCat, E);
+@test length(CCat.catalog) == 6
+remove_course!(CCat, [F,G]);
+@test length(CCat.catalog) == 4
+
+# add the courses back for later testing
+add_course!(CCat, [E,F,G]);
+
 # Test DegreePlan creation, other degree plan functions tested in ./test/DegreePlanAnalytics.jl
 @test dp.name == "2019 Plan"
 @test dp.curriculum === curric  # tests that they're the same object in memory