diff --git a/.github/workflows/cron-daily-fuzz.yml b/.github/workflows/cron-daily-fuzz.yml
index 9c2f4e6fc..5c9f259be 100644
--- a/.github/workflows/cron-daily-fuzz.yml
+++ b/.github/workflows/cron-daily-fuzz.yml
@@ -22,6 +22,7 @@ compile_descriptor,
 compile_taproot,
 parse_descriptor,
 parse_descriptor_secret,
+regression_descriptor_parse,
 roundtrip_concrete,
 roundtrip_descriptor,
 roundtrip_miniscript_script,
diff --git a/Cargo-minimal.lock b/Cargo-minimal.lock
index 4969b5a85..e5cf13fed 100644
--- a/Cargo-minimal.lock
+++ b/Cargo-minimal.lock
@@ -111,7 +111,8 @@ name = "descriptor-fuzz"
 version = "0.0.1"
 dependencies = [
  "honggfuzz",
- "miniscript",
+ "miniscript 12.3.0",
+ "miniscript 13.0.0",
  "regex",
 ]
 
@@ -181,7 +182,17 @@ dependencies = [
 
 [[package]]
 name = "miniscript"
-version = "12.2.0"
+version = "12.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5bd3c9608217b0d6fa9c9c8ddd875b85ab72bd4311cfc8db35e1b5a08fc11f4d"
+dependencies = [
+ "bech32",
+ "bitcoin",
+]
+
+[[package]]
+name = "miniscript"
+version = "13.0.0"
 dependencies = [
  "bech32",
  "bitcoin",
diff --git a/Cargo-recent.lock b/Cargo-recent.lock
index 4969b5a85..e5cf13fed 100644
--- a/Cargo-recent.lock
+++ b/Cargo-recent.lock
@@ -111,7 +111,8 @@ name = "descriptor-fuzz"
 version = "0.0.1"
 dependencies = [
  "honggfuzz",
- "miniscript",
+ "miniscript 12.3.0",
+ "miniscript 13.0.0",
  "regex",
 ]
 
@@ -181,7 +182,17 @@ dependencies = [
 
 [[package]]
 name = "miniscript"
-version = "12.2.0"
+version = "12.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5bd3c9608217b0d6fa9c9c8ddd875b85ab72bd4311cfc8db35e1b5a08fc11f4d"
+dependencies = [
+ "bech32",
+ "bitcoin",
+]
+
+[[package]]
+name = "miniscript"
+version = "13.0.0"
 dependencies = [
  "bech32",
  "bitcoin",
diff --git a/Cargo.toml b/Cargo.toml
index 88860af96..929b68e4b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "miniscript"
-version = "12.2.0"
+version = "13.0.0"
 authors = ["Andrew Poelstra <apoelstra@wpsoftware.net>, Sanket Kanjalkar <sanket1729@gmail.com>"]
 license = "CC0-1.0"
 homepage = "https://github.com/rust-bitcoin/rust-miniscript/"
diff --git a/fuzz/Cargo.toml b/fuzz/Cargo.toml
index db5187266..36e56edf2 100644
--- a/fuzz/Cargo.toml
+++ b/fuzz/Cargo.toml
@@ -12,6 +12,7 @@ cargo-fuzz = true
 [dependencies]
 honggfuzz = { version = "0.5.56", default-features = false }
 miniscript = { path = "..", features = [ "compiler" ] }
+old_miniscript = { package = "miniscript", version = "12.3" }
 
 regex = "1.0"
 
@@ -31,6 +32,10 @@ path = "fuzz_targets/parse_descriptor.rs"
 name = "parse_descriptor_secret"
 path = "fuzz_targets/parse_descriptor_secret.rs"
 
+[[bin]]
+name = "regression_descriptor_parse"
+path = "fuzz_targets/regression_descriptor_parse.rs"
+
 [[bin]]
 name = "roundtrip_concrete"
 path = "fuzz_targets/roundtrip_concrete.rs"
diff --git a/fuzz/fuzz_targets/regression_descriptor_parse.rs b/fuzz/fuzz_targets/regression_descriptor_parse.rs
new file mode 100644
index 000000000..c25fd2c55
--- /dev/null
+++ b/fuzz/fuzz_targets/regression_descriptor_parse.rs
@@ -0,0 +1,43 @@
+use core::str::FromStr;
+
+use honggfuzz::fuzz;
+use miniscript::{Descriptor, DescriptorPublicKey};
+use old_miniscript::{Descriptor as OldDescriptor, DescriptorPublicKey as OldDescriptorPublicKey};
+
+type Desc = Descriptor<DescriptorPublicKey>;
+type OldDesc = OldDescriptor<OldDescriptorPublicKey>;
+
+fn do_test(data: &[u8]) {
+    let data_str = String::from_utf8_lossy(data);
+    match (Desc::from_str(&data_str), OldDesc::from_str(&data_str)) {
+        (Err(_), Err(_)) => {}
+        (Ok(x), Err(e)) => panic!("new logic parses {} as {:?}, old fails with {}", data_str, x, e),
+        (Err(e), Ok(x)) => panic!("old logic parses {} as {:?}, new fails with {}", data_str, x, e),
+        (Ok(new), Ok(old)) => {
+            assert_eq!(
+                old.to_string(),
+                new.to_string(),
+                "input {} (left is old, right is new)",
+                data_str
+            )
+        }
+    }
+}
+
+fn main() {
+    loop {
+        fuzz!(|data| {
+            do_test(data);
+        });
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn duplicate_crash() {
+        crate::do_test(
+            b"tr(02dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd,{1,unun:0})",
+        )
+    }
+}
diff --git a/fuzz/generate-files.sh b/fuzz/generate-files.sh
index 743f9066f..b2b40a5eb 100755
--- a/fuzz/generate-files.sh
+++ b/fuzz/generate-files.sh
@@ -24,6 +24,7 @@ cargo-fuzz = true
 [dependencies]
 honggfuzz = { version = "0.5.56", default-features = false }
 miniscript = { path = "..", features = [ "compiler" ] }
+old_miniscript = { package = "miniscript", git = "https://github.com/apoelstra/rust-miniscript/", rev = "1259375d7b7c91053e09d1cbe3db983612fe301c" }
 
 regex = "1.0"
 EOF