diff --git a/crates/compiler/test_mono/generated/dbg_expr.txt b/crates/compiler/test_mono/generated/dbg_expr.txt
index 638fbca410..67a20163c2 100644
--- a/crates/compiler/test_mono/generated/dbg_expr.txt
+++ b/crates/compiler/test_mono/generated/dbg_expr.txt
@@ -43,8 +43,8 @@ procedure Num.96 (#Attr.2):
     ret Num.282;
 
 procedure Str.3 (#Attr.2, #Attr.3):
-    let Str.236 : Str = lowlevel StrConcat #Attr.2 #Attr.3;
-    ret Str.236;
+    let Str.246 : Str = lowlevel StrConcat #Attr.2 #Attr.3;
+    ret Str.246;
 
 procedure Test.0 ():
     let Test.5 : I64 = 1i64;
diff --git a/crates/compiler/test_mono/generated/dbg_inside_string.txt b/crates/compiler/test_mono/generated/dbg_inside_string.txt
index 8fa29df576..434f6ccb11 100644
--- a/crates/compiler/test_mono/generated/dbg_inside_string.txt
+++ b/crates/compiler/test_mono/generated/dbg_inside_string.txt
@@ -40,8 +40,8 @@ procedure Inspect.64 (Inspect.302):
     ret Inspect.302;
 
 procedure Str.3 (#Attr.2, #Attr.3):
-    let Str.238 : Str = lowlevel StrConcat #Attr.2 #Attr.3;
-    ret Str.238;
+    let Str.248 : Str = lowlevel StrConcat #Attr.2 #Attr.3;
+    ret Str.248;
 
 procedure Test.0 ():
     let Test.5 : Str = "Hello ";
diff --git a/crates/compiler/test_mono/generated/dbg_nested_expr.txt b/crates/compiler/test_mono/generated/dbg_nested_expr.txt
index d7f35b4d97..6a3650ec8a 100644
--- a/crates/compiler/test_mono/generated/dbg_nested_expr.txt
+++ b/crates/compiler/test_mono/generated/dbg_nested_expr.txt
@@ -39,8 +39,8 @@ procedure Num.96 (#Attr.2):
     ret Num.281;
 
 procedure Str.3 (#Attr.2, #Attr.3):
-    let Str.236 : Str = lowlevel StrConcat #Attr.2 #Attr.3;
-    ret Str.236;
+    let Str.246 : Str = lowlevel StrConcat #Attr.2 #Attr.3;
+    ret Str.246;
 
 procedure Test.0 ():
     let Test.6 : I64 = 1i64;
diff --git a/crates/compiler/test_mono/generated/pizza_dbg.txt b/crates/compiler/test_mono/generated/pizza_dbg.txt
index 8f39d447e6..e2e8cfa2fa 100644
--- a/crates/compiler/test_mono/generated/pizza_dbg.txt
+++ b/crates/compiler/test_mono/generated/pizza_dbg.txt
@@ -43,8 +43,8 @@ procedure Num.96 (#Attr.2):
     ret Num.282;
 
 procedure Str.3 (#Attr.2, #Attr.3):
-    let Str.236 : Str = lowlevel StrConcat #Attr.2 #Attr.3;
-    ret Str.236;
+    let Str.246 : Str = lowlevel StrConcat #Attr.2 #Attr.3;
+    ret Str.246;
 
 procedure Test.0 ():
     let Test.4 : I64 = 1i64;