diff --git a/Cargo.lock b/Cargo.lock
index 007e2eac6b..571cdceaf8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1404,7 +1404,7 @@ dependencies = [
  "futures",
  "num-traits",
  "sanitize-filename",
- "schemars",
+ "schemars 1.0.3",
  "serde",
  "serde_json",
  "tempfile",
@@ -4903,6 +4903,26 @@ dependencies = [
  "thiserror 2.0.12",
 ]
 
+[[package]]
+name = "ref-cast"
+version = "1.0.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a0ae411dbe946a674d89546582cea4ba2bb8defac896622d6496f14c23ba5cf"
+dependencies = [
+ "ref-cast-impl",
+]
+
+[[package]]
+name = "ref-cast-impl"
+version = "1.0.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1165225c21bff1f3bbce98f5a1f889949bc902d3575308cc7b0de30b4f6d27c7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+]
+
 [[package]]
 name = "regex"
 version = "1.10.6"
@@ -5278,7 +5298,20 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3fbf2ae1b8bc8e02df939598064d22402220cd5bbcca1c76f7d6a310974d5615"
 dependencies = [
  "dyn-clone",
- "schemars_derive",
+ "schemars_derive 0.8.22",
+ "serde",
+ "serde_json",
+]
+
+[[package]]
+name = "schemars"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1375ba8ef45a6f15d83fa8748f1079428295d403d6ea991d09ab100155fbc06d"
+dependencies = [
+ "dyn-clone",
+ "ref-cast",
+ "schemars_derive 1.0.3",
  "serde",
  "serde_json",
 ]
@@ -5295,6 +5328,18 @@ dependencies = [
  "syn 2.0.101",
 ]
 
+[[package]]
+name = "schemars_derive"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b13ed22d6d49fe23712e068770b5c4df4a693a2b02eeff8e7ca3135627a24f6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "serde_derive_internals",
+ "syn 2.0.101",
+]
+
 [[package]]
 name = "scoped-tls"
 version = "1.0.1"
@@ -7301,7 +7346,7 @@ dependencies = [
  "futures",
  "futures-util",
  "log",
- "schemars",
+ "schemars 0.8.22",
  "serde",
  "serde_json",
  "typescript-type-def",
diff --git a/deltachat-jsonrpc/Cargo.toml b/deltachat-jsonrpc/Cargo.toml
index 61f82a7132..ed4a722215 100644
--- a/deltachat-jsonrpc/Cargo.toml
+++ b/deltachat-jsonrpc/Cargo.toml
@@ -11,7 +11,7 @@ anyhow = { workspace = true }
 deltachat = { workspace = true }
 deltachat-contact-tools = { workspace = true }
 num-traits = { workspace = true }
-schemars = "0.8.22"
+schemars = "1.0.3"
 serde = { workspace = true, features = ["derive"] }
 async-channel = { workspace = true }
 serde_json = { workspace = true }