diff --git a/go.mod b/go.mod
index dc3ac56..c3cb249 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.26.4
 
 require (
 	github.com/HdrHistogram/hdrhistogram-go v1.2.0
-	github.com/goceleris/celeris v1.4.15
+	github.com/goceleris/celeris v1.5.3
 	golang.org/x/net v0.56.0
 )
 
diff --git a/go.sum b/go.sum
index 96db130..f0e01eb 100644
--- a/go.sum
+++ b/go.sum
@@ -2,8 +2,8 @@ github.com/HdrHistogram/hdrhistogram-go v1.2.0 h1:XMJkDWuz6bM9Fzy7zORuVFKH7ZJY41
 github.com/HdrHistogram/hdrhistogram-go v1.2.0/go.mod h1:CiIeGiHSd06zjX+FypuEJ5EQ07KKtxZ+8J6hszwVQig=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/goceleris/celeris v1.4.15 h1:et6pbB6R07BB2Ml/98zE8p8d+AamBDM/0CkAfQGnlcE=
-github.com/goceleris/celeris v1.4.15/go.mod h1:vEvLb5xgX0Is0O/VMIWAPikcwZ5ZIfdf+qWMXwgVqME=
+github.com/goceleris/celeris v1.5.3 h1:n3/2xAqwqyMG0c9g1bP+F2KdjZngCOgGFHup1f3fRY4=
+github.com/goceleris/celeris v1.5.3/go.mod h1:usrqjcfMxiNA4lFoE/YbEzX10+UFhoJ4JQVkAS7noSc=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
diff --git a/version.go b/version.go
index fe49dc9..f7c8e94 100644
--- a/version.go
+++ b/version.go
@@ -12,7 +12,7 @@ const modulePath = "github.com/goceleris/loadgen"
 // fallbackVersion is reported when build info carries no usable module
 // version for loadgen ((devel) builds, tests, directory replaces). Keep in
 // sync with the release tag.
-const fallbackVersion = "1.4.7"
+const fallbackVersion = "1.4.9"
 
 // Version is the loadgen release version, stamped into Result.LoadgenVersion
 // so downstream consumers (probatorium, perfmatrix) can record which loadgen