diff --git a/tools/local-dev/backend.Dockerfile b/tools/local-dev/backend.Dockerfile
index bceab72..1cd01c3 100644
--- a/tools/local-dev/backend.Dockerfile
+++ b/tools/local-dev/backend.Dockerfile
@@ -13,6 +13,7 @@ FROM golang:1.26.2-alpine AS builder
 WORKDIR /src
 ENV CGO_ENABLED=0 GOFLAGS=-trimpath
 
+COPY pkg/calc/       ./pkg/calc/
 COPY pkg/cronutil/   ./pkg/cronutil/
 COPY pkg/error/      ./pkg/error/
 COPY pkg/geoip/      ./pkg/geoip/
@@ -28,6 +29,7 @@ go 1.26.2
 
 use (
 	./backend
+	./pkg/calc
 	./pkg/cronutil
 	./pkg/error
 	./pkg/geoip
@@ -39,6 +41,7 @@ use (
 )
 
 replace (
+	galaxy/calc v0.0.0       => ./pkg/calc
 	galaxy/cronutil v0.0.0   => ./pkg/cronutil
 	galaxy/error v0.0.0      => ./pkg/error
 	galaxy/geoip v0.0.0      => ./pkg/geoip
diff --git a/tools/local-dev/gateway.Dockerfile b/tools/local-dev/gateway.Dockerfile
index 4bc5d98..b2e33ce 100644
--- a/tools/local-dev/gateway.Dockerfile
+++ b/tools/local-dev/gateway.Dockerfile
@@ -11,6 +11,7 @@ FROM golang:1.26.2-alpine AS builder
 WORKDIR /src
 ENV CGO_ENABLED=0 GOFLAGS=-trimpath
 
+COPY pkg/calc/       ./pkg/calc/
 COPY pkg/cronutil/   ./pkg/cronutil/
 COPY pkg/error/      ./pkg/error/
 COPY pkg/geoip/      ./pkg/geoip/
@@ -30,6 +31,7 @@ go 1.26.2
 use (
 	./backend
 	./gateway
+	./pkg/calc
 	./pkg/cronutil
 	./pkg/error
 	./pkg/geoip
@@ -43,6 +45,7 @@ use (
 )
 
 replace (
+	galaxy/calc v0.0.0       => ./pkg/calc
 	galaxy/cronutil v0.0.0   => ./pkg/cronutil
 	galaxy/error v0.0.0      => ./pkg/error
 	galaxy/geoip v0.0.0      => ./pkg/geoip