diff --git a/src/interpreter.c b/src/interpreter.c
index 3222ee8..e01293b 100644
--- a/src/interpreter.c
+++ b/src/interpreter.c
@@ -15,6 +15,8 @@ int currentInstruction = 0;
 
 bool isMainScopeGlobal = true;
 
+bool listDeprecationWarning = true;
+
 char* getFileContents(const char* filename);
 
 [[noreturn]] void customError(GroundArg type, GroundArg what, GroundInstruction* where, int whereLine, int exitCode) {
@@ -963,6 +965,10 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
             break;
         }
         case SETLIST: {
+            if (listDeprecationWarning) {
+                printf("Lists are deprecated, please migrate to using the \"collections\" library soon.\n");
+                listDeprecationWarning = false;
+            }
             if (in->args.length < 1) {
                 runtimeError(TOO_FEW_ARGS, "Expecting 1 arg", in, currentInstruction);
             }
@@ -980,6 +986,10 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
             break;
         }
         case SETLISTAT: {
+            if (listDeprecationWarning) {
+                printf("Lists are deprecated, please migrate to using the \"collections\" library soon.\n");
+                listDeprecationWarning = false;
+            }
             if (in->args.length < 3) {
                 runtimeError(TOO_FEW_ARGS, "Expecting 3 args", in, currentInstruction);
             }
@@ -1016,6 +1026,10 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
             break;
         }
         case GETLISTAT: {
+            if (listDeprecationWarning) {
+                printf("Lists are deprecated, please migrate to using the \"collections\" library soon.\n");
+                listDeprecationWarning = false;
+            }
             if (in->args.length < 2) {
                 runtimeError(TOO_FEW_ARGS, "Expecting 2 args", in, currentInstruction);
             }
@@ -1054,6 +1068,10 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
             break;
         }
         case GETLISTSIZE: {
+            if (listDeprecationWarning) {
+                printf("Lists are deprecated, please migrate to using the \"collections\" library soon.\n");
+                listDeprecationWarning = false;
+            }
             if (in->args.length < 2) {
                 runtimeError(TOO_FEW_ARGS, "Expecting 2 args", in, currentInstruction);
             }
@@ -1078,6 +1096,10 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
             break;
         }
         case LISTAPPEND: {
+            if (listDeprecationWarning) {
+                printf("Lists are deprecated, please migrate to using the \"collections\" library soon.\n");
+                listDeprecationWarning = false;
+            }
             if (in->args.length < 2) {
                 runtimeError(TOO_FEW_ARGS, "Expecting 2 args", in, currentInstruction);
             }