diff --git a/charon-pin b/charon-pin
index eebe608f9..9b45db5fb 100644
--- a/charon-pin
+++ b/charon-pin
@@ -1,2 +1,2 @@
 # This is the commit from https://github.com/AeneasVerif/charon that should be used with this version of aeneas.
-962f26311ccdf09a6a3cfeacbccafba22bf3d405
+34014046de827679e27967de482a33c02e0a865a
diff --git a/flake.lock b/flake.lock
index 16e8ee5fc..7df424ed6 100644
--- a/flake.lock
+++ b/flake.lock
@@ -9,11 +9,11 @@
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1723705977,
-        "narHash": "sha256-pfxZB7R4kyHr/+8/UYpvKBlTBlDY1H0oTIwqQI0vAXA=",
+        "lastModified": 1724231050,
+        "narHash": "sha256-RGKXT/OrFTnOU2fwO2yHvr5+ylGlKcRksyFw2viYIgw=",
         "owner": "aeneasverif",
         "repo": "charon",
-        "rev": "962f26311ccdf09a6a3cfeacbccafba22bf3d405",
+        "rev": "34014046de827679e27967de482a33c02e0a865a",
         "type": "github"
       },
       "original": {
@@ -272,11 +272,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1723688259,
-        "narHash": "sha256-WzeUR1MG9MnJnh9T7qcVe/v12qHvJvzdc3Z5HCeE2ns=",
+        "lastModified": 1724206841,
+        "narHash": "sha256-L8dKaX4T3k+TR2fEHCfGbH4UXdspovz/pj87iai9qmc=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "6e75319846684326d900daff1e2e11338cc80d2b",
+        "rev": "45e98fbd62c32e5927e952d2833fa1ba4fb35a61",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index dcd0a7fbd..7fdc5c65c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -90,7 +90,7 @@
         betree-llbc = charon.extractCrateWithCharon.${system} {
           name = "betree";
           src = ./tests/src/betree;
-          charonFlags = "--polonius --opaque=betree_utils";
+          charonFlags = "--polonius --opaque=crate::betree_utils";
           craneExtraArgs.checkPhaseCargoCommand = ''
             cargo rustc -- --test -Zpolonius
             ./target/debug/betree
diff --git a/tests/README.md b/tests/README.md
index c9ca00475..b89bc7782 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -45,7 +45,7 @@ The test runner supports setting several options for each test.
 - For crates, it will read the `crate_dir/aeneas-test-options` file.
 
 In both cases it supports the same options. Typical options are:
-- `charon-args=--polonius --opaque=betree_utils`: pass these arguments to `charon`;
+- `charon-args=--polonius --opaque=crate::betree_utils`: pass these arguments to `charon`;
 - `aeneas-args=-test-trans-units`: pass these arguments to `aeneas` for all backends;
 - `[fstar] aeneas-args=-decreases-clauses -template-clauses`: pass these arguments to `aeneas` for
   the `fstar` backend;
diff --git a/tests/src/betree/aeneas-test-options b/tests/src/betree/aeneas-test-options
index c59ada7ab..fdd045710 100644
--- a/tests/src/betree/aeneas-test-options
+++ b/tests/src/betree/aeneas-test-options
@@ -1,4 +1,4 @@
-charon-args=--polonius --opaque=betree_utils
+charon-args=--polonius --opaque=crate::betree_utils
 [!borrow-check] aeneas-args=-backward-no-state-update -test-trans-units -state -split-files
 [coq] aeneas-args=-use-fuel
 [fstar] aeneas-args=-decreases-clauses
diff --git a/tests/src/hashmap.rs b/tests/src/hashmap.rs
index 6d7702c1c..891969ebc 100644
--- a/tests/src/hashmap.rs
+++ b/tests/src/hashmap.rs
@@ -1,4 +1,4 @@
-//@ charon-args=--opaque=utils
+//@ charon-args=--opaque=crate::utils
 //@ [!borrow-check] aeneas-args=-state -split-files
 //@ [coq] aeneas-args=-use-fuel
 //@ [fstar] aeneas-args=-decreases-clauses