diff --git a/javascript/extractor/src/com/semmle/jcorn/Parser.java b/javascript/extractor/src/com/semmle/jcorn/Parser.java
index b0bc89645597..3ae1491af10e 100644
--- a/javascript/extractor/src/com/semmle/jcorn/Parser.java
+++ b/javascript/extractor/src/com/semmle/jcorn/Parser.java
@@ -790,7 +790,8 @@ private Token readRegexp() {
       String validFlags = "gim";
       if (this.options.ecmaVersion() >= 6) validFlags = "gimuy";
       if (this.options.ecmaVersion() >= 9) validFlags = "gimsuy";
-      if (this.options.ecmaVersion() >= 15) validFlags = "gimsuyv";
+      if (this.options.ecmaVersion() >= 13) validFlags = "dgimsuy";
+      if (this.options.ecmaVersion() >= 15) validFlags = "dgimsuyv";
       if (!mods.matches("^[" + validFlags + "]*$"))
         this.raise(start, "Invalid regular expression flag");
       if (mods.indexOf('u') >= 0) {
diff --git a/javascript/extractor/tests/es2022/input/d-flag.js b/javascript/extractor/tests/es2022/input/d-flag.js
new file mode 100644
index 000000000000..be7fb5d6841f
--- /dev/null
+++ b/javascript/extractor/tests/es2022/input/d-flag.js
@@ -0,0 +1,5 @@
+const pattern = /import/dg;
+
+function target() {
+  return pattern;
+}
\ No newline at end of file
diff --git a/javascript/extractor/tests/es2022/options.json b/javascript/extractor/tests/es2022/options.json
new file mode 100644
index 000000000000..075583ca1f63
--- /dev/null
+++ b/javascript/extractor/tests/es2022/options.json
@@ -0,0 +1,3 @@
+{
+    "experimental": true
+}
diff --git a/javascript/extractor/tests/es2022/output/trap/d-flag.js.trap b/javascript/extractor/tests/es2022/output/trap/d-flag.js.trap
new file mode 100644
index 000000000000..c8a92cf06a3e
--- /dev/null
+++ b/javascript/extractor/tests/es2022/output/trap/d-flag.js.trap
@@ -0,0 +1,224 @@
+#10000=@"/d-flag.js;sourcefile"
+files(#10000,"/d-flag.js")
+#10001=@"/;folder"
+folders(#10001,"/")
+containerparent(#10001,#10000)
+#10002=@"loc,{#10000},0,0,0,0"
+locations_default(#10002,#10000,0,0,0,0)
+hasLocation(#10000,#10002)
+#20000=@"global_scope"
+scopes(#20000,0)
+#20001=@"script;{#10000},1,1"
+#20002=*
+lines(#20002,#20001,"const pattern = /import/dg;","
+")
+#20003=@"loc,{#10000},1,1,1,27"
+locations_default(#20003,#10000,1,1,1,27)
+hasLocation(#20002,#20003)
+#20004=*
+lines(#20004,#20001,"","
+")
+#20005=@"loc,{#10000},2,1,2,0"
+locations_default(#20005,#10000,2,1,2,0)
+hasLocation(#20004,#20005)
+#20006=*
+lines(#20006,#20001,"function target() {","
+")
+#20007=@"loc,{#10000},3,1,3,19"
+locations_default(#20007,#10000,3,1,3,19)
+hasLocation(#20006,#20007)
+#20008=*
+lines(#20008,#20001,"  return pattern;","
+")
+#20009=@"loc,{#10000},4,1,4,17"
+locations_default(#20009,#10000,4,1,4,17)
+hasLocation(#20008,#20009)
+indentation(#10000,4," ",2)
+#20010=*
+lines(#20010,#20001,"}","")
+#20011=@"loc,{#10000},5,1,5,1"
+locations_default(#20011,#10000,5,1,5,1)
+hasLocation(#20010,#20011)
+numlines(#20001,5,4,0)
+#20012=*
+tokeninfo(#20012,7,#20001,0,"const")
+#20013=@"loc,{#10000},1,1,1,5"
+locations_default(#20013,#10000,1,1,1,5)
+hasLocation(#20012,#20013)
+#20014=*
+tokeninfo(#20014,6,#20001,1,"pattern")
+#20015=@"loc,{#10000},1,7,1,13"
+locations_default(#20015,#10000,1,7,1,13)
+hasLocation(#20014,#20015)
+#20016=*
+tokeninfo(#20016,8,#20001,2,"=")
+#20017=@"loc,{#10000},1,15,1,15"
+locations_default(#20017,#10000,1,15,1,15)
+hasLocation(#20016,#20017)
+#20018=*
+tokeninfo(#20018,5,#20001,3,"/import/dg")
+#20019=@"loc,{#10000},1,17,1,26"
+locations_default(#20019,#10000,1,17,1,26)
+hasLocation(#20018,#20019)
+#20020=*
+tokeninfo(#20020,8,#20001,4,";")
+#20021=@"loc,{#10000},1,27,1,27"
+locations_default(#20021,#10000,1,27,1,27)
+hasLocation(#20020,#20021)
+#20022=*
+tokeninfo(#20022,7,#20001,5,"function")
+#20023=@"loc,{#10000},3,1,3,8"
+locations_default(#20023,#10000,3,1,3,8)
+hasLocation(#20022,#20023)
+#20024=*
+tokeninfo(#20024,6,#20001,6,"target")
+#20025=@"loc,{#10000},3,10,3,15"
+locations_default(#20025,#10000,3,10,3,15)
+hasLocation(#20024,#20025)
+#20026=*
+tokeninfo(#20026,8,#20001,7,"(")
+#20027=@"loc,{#10000},3,16,3,16"
+locations_default(#20027,#10000,3,16,3,16)
+hasLocation(#20026,#20027)
+#20028=*
+tokeninfo(#20028,8,#20001,8,")")
+#20029=@"loc,{#10000},3,17,3,17"
+locations_default(#20029,#10000,3,17,3,17)
+hasLocation(#20028,#20029)
+#20030=*
+tokeninfo(#20030,8,#20001,9,"{")
+#20031=@"loc,{#10000},3,19,3,19"
+locations_default(#20031,#10000,3,19,3,19)
+hasLocation(#20030,#20031)
+#20032=*
+tokeninfo(#20032,7,#20001,10,"return")
+#20033=@"loc,{#10000},4,3,4,8"
+locations_default(#20033,#10000,4,3,4,8)
+hasLocation(#20032,#20033)
+#20034=*
+tokeninfo(#20034,6,#20001,11,"pattern")
+#20035=@"loc,{#10000},4,10,4,16"
+locations_default(#20035,#10000,4,10,4,16)
+hasLocation(#20034,#20035)
+#20036=*
+tokeninfo(#20036,8,#20001,12,";")
+#20037=@"loc,{#10000},4,17,4,17"
+locations_default(#20037,#10000,4,17,4,17)
+hasLocation(#20036,#20037)
+#20038=*
+tokeninfo(#20038,8,#20001,13,"}")
+hasLocation(#20038,#20011)
+#20039=*
+tokeninfo(#20039,0,#20001,14,"")
+#20040=@"loc,{#10000},5,2,5,1"
+locations_default(#20040,#10000,5,2,5,1)
+hasLocation(#20039,#20040)
+toplevels(#20001,0)
+#20041=@"loc,{#10000},1,1,5,1"
+locations_default(#20041,#10000,1,1,5,1)
+hasLocation(#20001,#20041)
+#20042=@"var;{target};{#20000}"
+variables(#20042,"target",#20000)
+#20043=@"var;{pattern};{#20000}"
+variables(#20043,"pattern",#20000)
+#20044=@"var;{this};{#20000}"
+variables(#20044,"this",#20000)
+#20045=*
+stmts(#20045,22,#20001,0,"const p ... ort/dg;")
+hasLocation(#20045,#20003)
+stmt_containers(#20045,#20001)
+#20046=*
+exprs(#20046,64,#20045,0,"pattern = /import/dg")
+#20047=@"loc,{#10000},1,7,1,26"
+locations_default(#20047,#10000,1,7,1,26)
+hasLocation(#20046,#20047)
+enclosing_stmt(#20046,#20045)
+expr_containers(#20046,#20001)
+#20048=*
+exprs(#20048,78,#20046,0,"pattern")
+hasLocation(#20048,#20015)
+enclosing_stmt(#20048,#20045)
+expr_containers(#20048,#20001)
+literals("pattern","pattern",#20048)
+decl(#20048,#20043)
+#20049=*
+exprs(#20049,5,#20046,1,"/import/dg")
+hasLocation(#20049,#20019)
+enclosing_stmt(#20049,#20045)
+expr_containers(#20049,#20001)
+literals("/import/dg","/import/dg",#20049)
+#20050=*
+regexpterm(#20050,14,#20049,0,"import")
+#20051=@"loc,{#10000},1,18,1,23"
+locations_default(#20051,#10000,1,18,1,23)
+hasLocation(#20050,#20051)
+regexp_const_value(#20050,"import")
+#20052=*
+stmts(#20052,17,#20001,1,"functio ... tern;\n}")
+#20053=@"loc,{#10000},3,1,5,1"
+locations_default(#20053,#10000,3,1,5,1)
+hasLocation(#20052,#20053)
+stmt_containers(#20052,#20001)
+#20054=*
+exprs(#20054,78,#20052,-1,"target")
+hasLocation(#20054,#20025)
+expr_containers(#20054,#20052)
+literals("target","target",#20054)
+decl(#20054,#20042)
+#20055=*
+scopes(#20055,1)
+scopenodes(#20052,#20055)
+scopenesting(#20055,#20000)
+#20056=@"var;{this};{#20055}"
+variables(#20056,"this",#20055)
+#20057=@"var;{arguments};{#20055}"
+variables(#20057,"arguments",#20055)
+is_arguments_object(#20057)
+#20058=*
+stmts(#20058,1,#20052,-2,"{\n  ret ... tern;\n}")
+#20059=@"loc,{#10000},3,19,5,1"
+locations_default(#20059,#10000,3,19,5,1)
+hasLocation(#20058,#20059)
+stmt_containers(#20058,#20052)
+#20060=*
+stmts(#20060,9,#20058,0,"return pattern;")
+#20061=@"loc,{#10000},4,3,4,17"
+locations_default(#20061,#10000,4,3,4,17)
+hasLocation(#20060,#20061)
+stmt_containers(#20060,#20052)
+#20062=*
+exprs(#20062,79,#20060,0,"pattern")
+hasLocation(#20062,#20035)
+enclosing_stmt(#20062,#20060)
+expr_containers(#20062,#20052)
+literals("pattern","pattern",#20062)
+bind(#20062,#20043)
+#20063=*
+entry_cfg_node(#20063,#20001)
+#20064=@"loc,{#10000},1,1,1,0"
+locations_default(#20064,#10000,1,1,1,0)
+hasLocation(#20063,#20064)
+#20065=*
+exit_cfg_node(#20065,#20001)
+hasLocation(#20065,#20040)
+successor(#20052,#20065)
+#20066=*
+entry_cfg_node(#20066,#20052)
+#20067=@"loc,{#10000},3,1,3,0"
+locations_default(#20067,#10000,3,1,3,0)
+hasLocation(#20066,#20067)
+#20068=*
+exit_cfg_node(#20068,#20052)
+hasLocation(#20068,#20040)
+successor(#20062,#20060)
+successor(#20060,#20068)
+successor(#20058,#20062)
+successor(#20066,#20058)
+successor(#20045,#20048)
+successor(#20049,#20046)
+successor(#20048,#20049)
+successor(#20046,#20052)
+successor(#20054,#20045)
+successor(#20063,#20054)
+numlines(#10000,5,4,0)
+filetype(#10000,"javascript")
diff --git a/javascript/ql/lib/change-notes/2026-08-10-d-regex-flag.md b/javascript/ql/lib/change-notes/2026-08-10-d-regex-flag.md
new file mode 100644
index 000000000000..8552c7bf7925
--- /dev/null
+++ b/javascript/ql/lib/change-notes/2026-08-10-d-regex-flag.md
@@ -0,0 +1,4 @@
+---
+category: minorAnalysis
+---
+* Added support for regular expressions using the `d` flag.